Colored Charged Silsesquioxanes

Description The present invention refers to compounds suitable for use as charged coloured particles in electrophoretic devices, and also to electrophoretic devices comprising the new compounds.

Electronic paper, also called e-paper or electronic ink, are a range of display technology, which are designed to mimic the appearance of ordinary ink on paper, but that can be written to and erased electronically. In order to mimic the appearance of ordinary ink on paper, electronic paper should have the following attributes: a) a resolution of 150 ppi or better, b) a contrast of about 10:1 or better, c) a stable display (i. e. does not need to be refreshed constantly), d) readable in ambient light, e) readable at wide viewing angle, f) a weight comparable to that of an equally sized sheet of card, g) a size comparable to that of a sheet of paper commonly used for books, preferably A4 (298 x 212mm), h) robust (i. e. will withstand being dropped or hit) and optionally i) flexible, or at least bendable (which can be achieved by using plastic substrates). In addition, electronic paper should show low power consumption.

Applications of electronic paper include electronic pricing labels, time tables at bus station, mo- bile phone displays and e-readers able to display digital versions of books and electronic paper magazines.

Electronic paper forms visible images by rearranging charged colored particles using an applied electric field.

For example, Comiskey et al. Nature 1998, 394, 253 to 255 describes a display technology called vertical electrophoretic display (EPD). In one embodiment, this technology uses microcapsules having a transparent shell and filled with numerous slightly negatively charged white titanium dioxide microparticles dispersed in a dyed (Oil Blue N) dielectric fluid. The microcap- sules are dispersed in a carrier (UV curable urethane) and subsequently coated onto a transparent conductive film (indium tin oxide on polyester). Rear electrodes printed from a silver doped polymeric ink are then applied to the display layer. Applying a positive charge to one or more rear electrodes results in the migration of the slightly negatively charged white titanium dioxide microparticles to the bottom of the local microcapsule, forcing the dyed dielectric fluid to the surface and giving the pixel a black appearance. Reversing the voltage has the opposite effect.

Whereas there are currently black and white electronic papers which mimic the appearance of ordinary ink on paper sufficiently, the development of full-color electronic papers resembling colored ink on ordinary paper is still an area of intense research.

Full-colour electronic paper can be generated a) by modulating light in an additive system with the primaries of red, green and blue (RGB-technology), b) by using s substractive system with cyan, magenta and yellow (CMY-technology) or c) by using a substractive/additive hybrid system using both RGB and CMY primaries in a cooperative "biprimary system" (J. Heikenfeld et al. Journal of the SID, 201 1 , 19/2, 129 to 156). Both technologies (RGB-technology or CMY technology) require a dispersion of charged coloured particles in a dielectric fluid, wherein the charged particles show a narrow size distribution and thus form homogeneous dispersions. When using the CMY technology, for example, the charged coloured particles should have a size in the range of about 1 nm to 100 nm. The Zeta potential of the charged coloured partricles in the dielectric fluid should be above -30 mV and below +30 mV. The dispersion should have a viscosity (at 25 °C) of below 5 mNs/m ² . The dispersion should have a resistivity of about 10 ¹⁰ Qcm. The relative permittivity of the dispersion should be about 2. In additon, the charged coloured particles should show a high colour strength. When using CMY technology in video applications, it is desirable to use charged coloured particles of the the smallest particle size possible, as a decrease in particle size yields an increase in the switching frequency of the images.

WO 2007/147742 describes a coloured compound of general formula

wherein

each of A and A' is, independently of the other, C1-C4 alkyl;

CAGE is a moiety of the formula IA

(IA)

wherein the asterisks ( ^* ) mark the bonds binding the moieties of the formula,

shown above, respectively,

D is a chromophoric moiety, with the proviso that all 8 moieties D in a molecule of the formula I are identical;

E is **-C(R ₃ a)(R3)-C(H)(R ₃ b)-** and/or

wherein the double asterisks ( ^** ) mark the binding bonds, respectively, and wherein each of R3, R3a and R3b, independently of the others, is hydrogen or unsubstituted or substituted Ci-Ci2alkyl; L is unsubstituted or substituted Ci-C2salkylene which is linear or branched, which alkylene may be bound ^* and/or be interrupted by at least one of the radicals selected from the group consisting of -0-, -S-, -N(R ₄ )-, -CO-, -O-CO-, -CO-O-, -N(R ₄ )-CO-, -CO-N(R ₄ )- and phenylene, wherein R ₄ is hydrogen or unsubstituted or substituted Ci-Ci2alkyl;

R5 is hydrogen or unsubstituted or substituted Ci-Ci2alkyl;

or a salt thereof.

The coloured silsesquisiloxanes are used as colorants, pigments and dyes.

WO2007/048721 describes the use of functional particles as electrophoretic displaying particles, wherein the functionalized particles are S1O2, AI2O3 or mixed S1O2 and AI2O3 particles comprising covalently bound to an oxygen atom on the surface, a radical of formula (1), wherein R ¹ and R ² are independently of each other hydrogen, particle surface -0-, or a substituent, n is 1 , 2, 3, 4, 5, 6, 7 or 8, B is the direct bond or a bridge member, and D is the residue of an organic chromophore.

WO 2010/149505 describes a composition comprising charged particles, preferably having an inorganic core of S1O2, AI2O3 and/or ΤΊΟ2, and a counter ion comprising a silicon atom which is directly bound to a carbon atom. Said composition may be used in electrophoretic displays. Preferably, said charged particles comprise a dye attached to said inorganic core and said counter ion comprise a (poly)siloxane moiety linked via suitable bridge members to a

quaternary, positively charged nitrogen or phosphorus atom, or to a moiety carrying an anionic functional group. Exemplified are charged particles having a S1O2 core.

The charged particles of WO 2010/149505 have several disadvantages when used in electrophoretic display applications. First, the last step of the process for the preparation of the charged particles of WO 2010/149505 has to be performed in a two phase system comprising an aqueous layer and an organic layer, for example petrol ether, and in addition produces sodium iodide as by-product. As water and sodium iodide decrease the performance of the charged particles in electrophoretic display application, water and sodium iodide have to be removed before use of the charged particles in electrophoretic display applications. In addition, the solvent of the organic layer comprising the charged particles has to be exchanged by a sol- vent suitable for application in electrophoretic displays such as dodecane. The removal of water and sodium iodide is tedious and usually not completely successful (traces of water and sodium iodide remain in the organic layer). The solvent exchange of the organic layer is also tedious.

Thus, it was the object of the present invention to provide charged colored particles suitable for use in full-color electronic paper.

Charged colored particles are colored particles bearing a charge or particles which are salts constituted of one or more cations and one or more anions.

Ideally, the charged colored particles should show a narrow size distribution, and thus form homogeneous dispersions in a dielectric fluid such as dodecane. For example, the Zeta potential of the charged coloured partricles in the dielectric fluid should be above -30 mV and below +30 mV. Ideally, the dispersion should have a viscosity (at 25 °C) of below 5 mNs/m ² Ideally, the dispersion should have a resistivity of about 10 ¹⁰ Qcm. Ideally, the relative permittivity of the dispersion should be about 2. In additon, the charged coloured particles should show a high colour strength.

Ideally, the charged colored particles should have a particle size suitable for use in video applications based on CMY technology, in particular a particle size in the range of 0.5 nm to 1 .5 nm, preferably 0.8 to 1 .2 nm.

It was also the object of the present invention to provide a process for the preparation of the charged colored particles suitable for use in full-colour electronic paper, which process allows a convenient purification, respectively, isolation of the charged colored particles. In particular, the process does not produce the charged colored particles along with considerable high amounts of unwanted by-products such as water or sodium iodide, which are tedious to remove. In addition, the process allows the targeted preparation of charged particles of a well defined structure including a well-defined number of charges.

This object is solved by the compounds of claim 1 , the processes of claims 17 and 18, and by the electrophoretic device of claim 20. The compounds of the present invention are of formula

O

nx(b + f) O-S-Z (1A)

O wherein

n is 1, 2, 3, 4, 5, 6, 7 or 8,

m is 8 - n, a is 0 or 1 ,

b is 0 or 1,

cisOorl,

r is 0 or 1 ,

s is 0 or 1,

d is 0 or 1,

e is 0 or 1 ,

f is 0 or 1 , with the proviso that at least b or f is 1 , and with the proviso f is 0, then s, d and e are also 0, R ^1a and R ^1b are independently from each other Ci-4-alkyl,

R ^2a , R ^2b and R ^2c are independently from each other hydrogen or Ci-4-alkyl,

L ¹ is Ci-2o-alkylene, Ci-20-alkylene-phenylene, Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or C5-8-cycloalkylene, wherein L ¹ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH,

X ¹ , X ² , X ³ and X ⁴ are independently of each other O, S, C(O) or C(0)0,

L ² , L ³ , L ⁴ and L ⁵ are independently of each other Ci-20-alkylene, Ci-20-alkylene-phenylene,

Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or Cs-s-cycloalkylene, wherein L ² , L ³ , L ⁴ and L ⁵ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH, or

L ² and R ³ or L ³ and R ³ together with the N linked to both of them form a 5, 6 or 7 membered ring, or

L ⁵ and R ⁴ together with the N linked to both of them form a 5, 6 or 7 membered ring,

R ³ , R ⁴ and R ⁵ are independently of each other Ci-20-alkyl, which may be substituted with a sub- stituent selected from the group consisting of C6-i4-aryl, OCi-6-alkyl, and NO2, or

R ⁴ and R ⁵ together with the N linked to both of them form a 5, 6 or 7 membered ring, which may also include O or S,

R ⁶ is Ci-20-alkyl, which may be substituted with a substituent selected from the group consisting of Ce-14-aryl, OCi _-6 -alkyl, N0 ₂ ,

D ¹ is a chromophoric moiety, which may be substituted with one or more R ⁵⁰ ,

wherein R ⁵⁰ are independently from each other selected from the group consisting of Ci-20-alkyl,

Ce-14-aryl, halogen, OCi-6-alkyl, OH, NH2 and NO2, and Z ¹ is Ci-100-alkyl, wherein one or more methylene groups are replaced by -SiR ¹⁰⁰ R ¹⁰¹ -,

-SiR ¹⁰⁰ R ¹⁰¹ O-, -O- or -S-, with the proviso that -SiR ¹⁰⁰ R ¹⁰¹ -, -SiR ¹⁰⁰ R ¹⁰¹ O-, -O- or -S- are not directly linked to the S of

O

I I ₁

-o-s I I -z

O

J wherein R ¹⁰⁰ and R ¹⁰¹ are independently from each other Ci-6-alkyl, or of formula

o is 1,2, 3, 4, 5, 6, 7 or 8 p is 8 - o, g is 0 or 1 ,

h is 0 or 1,

i is 0 or 1 ,

t is 0 or 1,

j is 0 or 1 ,

k is 0 or 1,

I is 0 or 1,

q is 0 or 1 with the proviso that at least h or q is 1 , and with the proviso that if q is 0, then j, k and I are also 0,

R ^7a and R ^7b are independently of each other Ci-4-alkyl,

R ^8a , R ^8b and R ^8c are independently from each other hydrogen or Ci-4-alkyl,

L ⁶ is Ci-2o-alkylene, Ci-20-alkylene-phenylene, Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or C5-8-cycloalkylene, wherein L ⁶ may be substituted with one or more substitutents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH,

Y ¹ , Y ² , Y ³ and Y ⁴ are independently of each other NR ⁵¹ , O, S, C(O) or C(0)0, wherein R ⁵¹ is Ci-20-alkyl,

L ⁷ , L ⁸ , L ⁹ ' L ¹⁰ and L ¹¹ are independently of each other Ci-20-alkylene, Ci-20-alkylene-phenylene or Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or Cs-s-cycloalkylene, wherein L ⁷ , L ⁸ , Ι_ ⁹ · L ¹⁰ and L ¹¹ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH, and

R ⁹ is Ci-10-alkyl,

D ² is a chromophoric moiety, which may be substituted with one or more R ⁵² , wherein R ⁵² are independently from each other selected from the group consisting of Ci-20-alkyl, C6-i4-aryl, halo- gen, OCi-6-alkyl, OH, NH ₂ and N0 ₂ ,

R ¹⁰ and R ¹¹ are independently from each other Ci-20-alkyl, which may be substituted with one or more substituents selected from the group consisting of C6-i4-aryl, OCi-6-alkyl, and NO2, E is N or P, and

Z ² is Ci-100-alkyl, wherein one or more methylene groups are replaced by -SiR ¹⁰² R ¹⁰³ -,

-SiR ¹⁰² R ¹⁰³ O-, -O- or -S-, with the proviso that -SiR ¹⁰² R ¹⁰³ -, -SiR ¹⁰² R ¹⁰³ O-, -O- or -S- are not directly linked to E, wherein R ¹⁰² and R ¹⁰³ are independently from each other Ci-6-alkyl.

Examples of Ci-4-alkyl are methyl, ethyl, butyl, iso-butyl, sec-butyl and tert-butyl. Examples of Ci-6-alkyl are Ci-4-alkyl, pentyl, isopentyl and hexyl. Examples of Ci-10-alkyl are Ci-6-alkyl, heptyl, octyl, nonyl and decyl. Examples of Ci-20-alkyl are Ci-10-alkyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl,

Examples of Ci-2-alkylene are methylene and ethylene. Examples of Ci-4-alkylene are

Ci-2-alkylene, propylene and butylene. Examples of Ci-10-alkylene are Ci-4-alkylene, pentylene, hexylene, heptylene, octylene, nonylene and decylene. Examples of Ci-20-alkylene are C1-10- alkylene, undecylene, dodecylene, tridecylene, tetradecylene, pentadecylene, hexadecylene, heptadecylene, octadecylene, nonadecylene and eicosylene, Examples of Cs-8-cycloalkylene are cyclopentylen, cyclohexylene, cycloheptylene and cy- clooctylene.

Examples of Ce-14-aryl are phenyl and naphthyl.

Examples of halogen are F, CI, Br and I.

The chromophoric moiety can be a chromophoric moiety derived from a natural organic dye or a synthetic organic dye.

Examples of synthetic organic dyes are anthraquinone-type dyes, nitro-type dyes, acridine-type dyes, arylmethane-type dyes, azo-type dye, diazonium-type dyes, phthalocyanine-type dyes, quinine-imine dyes, thiazole-type dyes and xanthene-type dyes.

Preferably, the chromophoric moiety is a chromophoric moiety deriving from a synthetic organic dye, in particular from an anthraquinone-type dye or a nitro-type dye.

Examples of chromophoric moieties deriving from an anthraquinone-type dye are of formula

 Examples of chromophoric moieties deriving from a nitro-type dye are of formula

wherein

R ⁵³ is Ci-io-alkyl, preferably Ci-6-alkyl, more preferably butyl R ^100a and R ^101a are independently from each other Ci-6-alkyl, more preferably methyl, v is an integer from 1 to 12, preferably from 2 to 6, most preferably 3,

w is an integer from 2 to 25, preferably 5 to 20, more preferably 8 to 15, most preferably 1 1 ,

and wherein

R ⁵⁴ is Ci-io-alkyl, preferably Ci-6-alkyl, more preferably ethyl,

x is preferably an integer from 5 to 25, more preferably from 5 to 20, most preferably from 8 to 15, most preferably 12,

y is an integer from 1 to 5, preferably from 1 to 2, more preferably 1.

Examples of Z ² are

wherein

R ⁵⁵ is Ci-io-alkyl, preferably Ci-6-alkyl, more preferably butyl,

R ^102a and R ^103a are independently from each other Ci-6-alkyl, more preferably methyl, aa is an integer from 1 to 12, preferably from 2 to 10, most preferably 2 or 10,

z is an integer from 2 to 25, preferably 5 to 20, more preferably 8 to 15, most preferably 1 1 ,

and wherein

R ⁵⁶ is Ci-io-alkyl, preferably Ci-6-alkyl, more preferably ethyl,

bb is preferably an integer from 5 to 25, more preferably from 5 to 20, most preferably from 8 to 15, most preferably 12,

cc is an integer from 1 to 5, preferably from 1 to 2, more preferably 1. Preferably, the compounds of the present invention are of formula

a is 0 or 1 ,

b is 0 or 1,

c is 0 or 1 ,

risOorl,

s is 0 or 1 ,

d is 0 or 1,

e is 0 or 1 ,

f is 0 or 1, with the proviso that at least b or f is 1 , and with the proviso f is 0, then s, d and e are also 0, R ^1A and R ^1B are independently from each other Ci-4-alkyl, R ^2a , R ^2b and R ^2c are independently from each other hydrogen or Ci-4-alkyl,

L ¹ is Ci-2o-alkylene, Ci-20-alkylene-phenylene, Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or

C5-8-cycloalkylene, wherein L ¹ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH ,

X ¹ , X ² , X ³ and X ⁴ are independently of each other O, S, C(O) or C(0)0,

L ² , L ³ , L ⁴ and L ⁵ are independently of each other Ci-20-alkylene, Ci-20-alkylene-phenylene, C1-20- alkylene-C5-8-cycloalkylene, phenylene or Cs-s-cycloalkylene, wherein L ² , L ³ , L ⁴ and L ⁵ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH , or

L ² and R ³ or L ³ and R ³ together with the N linked to both of them form a 5, 6 or 7 membered ring, or

L ⁵ and R ⁴ together with the N linked to both of them form a 5, 6 or 7 membered ring,

R ³ , R ⁴ and R ⁵ are independently of each other Ci-20-alkyl, which may be substituted with a sub- stituent selected from the group consisting of C6-i4-aryl, OCi-6-alkyl, and NO2, or

R ⁴ and R ⁵ together with the N linked to both of them form a 5, 6 or 7 membered ring, which may also include O or S,

R ⁶ is Ci-20-alkyl, which may be substituted with a substituent selected from the group consisting of Ce-14-aryl, OCi _-6 -alkyl, N0 ₂ ,

wherein the bond marked with ^* is linked to

R R

-X ⁴ - -L ⁴ -X ² - ■N-R ⁵ or -X ⁴ - -L ⁴ -X ² - -N-FT

R dd is an integer from 0 to 3,

ee is an integer from 0 to 2,

ff is an integer from 0 to 1 , and

R ⁵⁰ are independently from each other selected from the group consisting of Ci-20-alkyl, C6-i4-aryl, halogen, OCi-6-alkyl, OH, Nhb and NO2, and

Z ¹ is Ci-100-alkyl, wherein one or more methylene groups are replaced by -SiR ¹⁰⁰ R ¹⁰¹ -, -SiR ¹⁰⁰ R ¹⁰¹ O-, -O- or -S-, with the proviso that -SiR ¹⁰⁰ R ¹⁰¹ -, -SiR ¹⁰⁰ R ¹⁰¹ O-, -O- or -S- are not directly linked to the S of wherein R ¹⁰⁰ and R ¹⁰¹ are independently from each other Ci-6-alkyl,

or of formula

wherein

ois 1,2,3,4,5, 6, 7 or 8, pis 8- 0, g is 0 or 1 ,

h is 0 or 1,

i is 0 or 1 ,

t is 0 or 1,

j is 0 or 1 ,

k is 0 or 1,

I is 0 or 1,

q is 0 or 1 with the proviso that at least h or q is 1 , and with the proviso that if q is 0, then j, k and I are also 0,

R ^7a and R ^7b are independently of each other Ci-4-alkyl,

R ^8a , R ^8b and R ^8c are independently from each other hydrogen or Ci

L ⁶ is Ci-2o-alkylene, Ci-2o-alkylene-C6-i4-arylene, Ci-2o-alkylene-C5-8-cycloalkylene, C6-i4-arylene or C5-8-cycloalkylene, wherein L ⁶ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH ,

Y ¹ , Y ² , Y ³ and Y ⁴ are independently of each other N R ⁵¹ , O, S, C(O) or C(0)0, wherein R ⁵¹ is Ci-20-alkyl,

L ⁷ , L ⁸ , L ⁹ ' L ¹⁰ and L ^{1 1} are independently of each other Ci-20-alkylene, Ci-2o-alkylene-C6-i4-arylene or Ci-2o-alkylene-C5-8-cycloalkylene, C6-i4-arylene or Cs-s-cycloalkylene, wherein L ⁷ , L ⁸ , Ι_ ⁹ · L ¹⁰ and L ¹¹ may be substituted with one or more substituents selected from the group con- sisting of halogen, OCi-6-alkyl, NO2 and OH ,

D ² is of formula

gg is an integer from 0 to 3, hh is an integer from 0 to 2, ii is an integer from 0 to 1 , and R ⁵² are independently from each other selected from the group consisting of Ci-20-alkyl, Ce-14-aryl, halogen, OCi-e-alkyl, OH , N H ₂ and NO2, R ⁹ is Ci-10-alkyl,

R ¹⁰ and R ¹¹ are independently from each other Ci-20-alkyl, which may be substituted with one or more substituents selected from the group consisting of C6-i4-aryl, OCi-6-alkyl and NO2, E is N or P, and

Z ² is Ci-100-alkyl, wherein one or more methylene groups are replaced by -SiR ¹⁰² R ¹⁰³ -,

-SiR ¹⁰² R ¹⁰³ O-, -O- or -S-, with the proviso that -SiR ¹⁰² R ¹⁰³ -, -SiR ¹⁰² R ¹⁰³ O-, -O- or -S- are not directly linked to E, wherein R ¹⁰² and R ¹⁰³ are independently from each other Ci-6-alkyl.

More preferably, the compounds of the present invention are of formula

O

n x (b + f) O-S-Z (1A)

O

wherein wherein n is 1 , 2, 3, 4, 5, 6 or 7,

m is 8 - n, a is 0 or 1 ,

b is 0 or 1 ,

c is O or l ,

r is 0 or 1 ,

s is 0

d is 0,

e is 0 or 1 , and

f is 0 or 1 , with the proviso that at least b or f is 1 , and with the proviso f is 0, then s, d and e are also 0,

R ^1a and R ^1b are independently from each other Ci-4-alkyl,

R ^2a , R ^2b and R ^2c are independently from each other hydrogen or Ci-4-alkyl,

L ¹ is Ci-io-alkylene or phenylene,

X ¹ and X ³ are independently of each other O or S,

L ² , L ³ and L ⁵ are independently of each other Ci-20-alkylene or Ci-20-alkylene-phenylene or phe- nylene, or

L ² and R ³ or L ³ and R ³ together with the N linked to both of them form a 5, 6 or 7 membered ring, or

L ⁵ and R ⁴ together with the N linked to both of them form a 5, 6 or 7 membered ring,

R ³ , R ⁴ and R ⁵ are independently of each other Ci-io-alkyl or benzyl, or

R ⁴ and R ⁵ together with the N linked to both of them form a 5, 6 or 7 membered ring, which may also include O or S,

R ⁶ is Ci-20-alkyl, which may be substituted with phenyl, D ¹ is of formula

wherein the bond marked with ^* is linked to

Ff

-X ⁴ - - L ⁴ -X ² - -N-R ⁵ or -X ⁴ - -L ⁴ -X ² - -N— R

R dd is an integer from 0 to 3,

ee is an integer from 0 to 2,

ff is an integer from 0 to 1 , and

R ⁵⁰ are independently from each other selected from the group consisting of Ci-20-alkyl, C6-i4-aryl, halogen, OCi-6-alkyl, OH, Nhb and NO2, and

Z ¹ is Ci-5o-alkyl, wherein one or more methylene groups are replaced by -SiR ¹⁰⁰ R ¹⁰¹ -, -SiR ¹⁰⁰ R ¹⁰¹ O-, -O- or -S-, with the proviso that -SiR ¹⁰⁰ R ¹⁰¹ -, -SiR ¹⁰⁰ R ¹⁰¹ O-, -O- or -S- are not directly linked to the S of

wherein R ¹⁰⁰ and R ¹⁰¹ are independently from each other Ci-6-alkyl,

or of formula

wherein

o is 1 , 2, 3, 4, 5, 6, 7 or 8,

p is 8 - o, g is 0

h is 0 or 1 , i is 0 or 1 ,

t is 0 or 1 ,

j is 0 or 1 ,

k is 0

I is 0 or 1 ,

q is 0 or 1 with the proviso that at least h or q is 1 , and with the proviso that if q is 0, then j, k and I are also 0,

R ^7a and R ^7b are independently of each other Ci-4-alkyl,

R ^8a , R ^8b and R ^8c are independently from each other hydrogen or Ci-4-alkyl,

L ⁶ is Ci-io-alkylene or phenylene,

Y ³ and Y ⁴ are independently of each other O or NR ⁵¹ , wherein R ⁵¹ is Ci-6-alkyl,

L ⁷ , L ⁹ and L ¹⁰ are independently of each other Ci-20-alkylene or Ci-20-alkylene-phenylene or phenylene,

D ² is of formula

wherein the bond marked with ^* is linked to

-Y ⁴ - ^■ L— Y- SO3 or -Y -L ⁸ -Y ² - -SO3R

J | L gg is an integer from 0 to 3,

hh is an integer from 0 to 2,

ii is an integer from 0 to 1 , and

R ⁵² are independently from each other selected from the group consisting of Ci-20-alkyl, Ce-14-aryl, halogen, OCi _-6 -alkyl, OH, NH ₂ and N0 ₂ ,

R ⁹ is Ci-6-alkyl,

R ¹⁰ and R ¹¹ are independently from each other Ci-6-alkyl, which may be substituted with phenyl, E is N, and

Z ² is Ci-5o-alkyl, wherein one or more methylene groups are replaced by -SiR ¹⁰² R ¹⁰³ -,

-SiR ¹⁰² R ¹⁰³ O-, -O- or -S-, with the proviso that -SiR ¹⁰² R ¹⁰³ -, -SiR ¹⁰² R ¹⁰³ O-, -O- or -S- are not directly linked to E, wherein R ¹⁰² and R ¹⁰³ are independently from each other Ci-6-alkyl.

Most preferably, the compounds of the present invention are of formula

O

nx(b + f) O-S-Z (1A)

O wherein

n is 1, 2, 3, 4, 5, 6 or 7,

m is 8 - n, a is 0 or 1 ,

b is 0 or 1,

c is 0 or 1 ,

r is 0 or 1 ,

sisO

d is 0,

e is 0 or 1 ,

f is 0 or 1, with the proviso that at least b or f is 1 , and with the proviso f is 0, then s, d and e are also 0, and that if b is 1 , then f is 0, and if f is 1 , then b is 0,

R ^1a and R ^1b are independently from each other methyl, R ^2a , R ^2b and R ^2c are independently from each other hydrogen,

L ¹ is Ci-io-alkylene,

X ¹ and X ³ are O, L ² , L ³ and L ⁵ are independently of each other Ci-10-alkylene or Ci-10-alkylene-phenylene, or L ² and R ³ or L ³ and R ³ together with the N linked to both of them form a 6 membered ring, or L ⁵ and R ⁴ together with the N linked to both of them form a 6 membered ring,

R ³ , R ⁴ and R ⁵ are independently of each other Ci-6-alkyl or benzyl, or

R ⁴ and R ⁵ together with the N linked to both of them form a 6 membered ring, which may also include O or S,

R ⁶ is Ci-io-alkyl, which may be substituted with phenyl, D ¹ is of formula

dd is an integer from 0 to 3,

ee is an integer from 0 to 2,

ff is an integer from 0 to 1 , and R ⁵⁰ are independently from each other selected from the group consisting of Ci- ₆ -alkyl, OH, NH ₂

Z ¹ is

wherein

R ⁵³ is Ci-10-alkyl,

R ^100a and R ^101a are independently from each other Ci-e-alkyl,

v is an integer from 1 to 12,

w is an integer from 2 to 25,

or of formula

wherein

o is 1, 2, 3, 4, 5, 6, 7 or 8,

pis 8-o, g is 0

h is 0 or 1,

i is 0 or 1,

t is 0 or 1,

j is 0 or 1,

k is 0

I is 0 or 1,

q is 0 or 1 with the proviso that at least h or q is 1 , and with the proviso that if q is 0, then j, k and I are also 0, and that if h is 1 , then q is 0, and if q is 1 , then h is 0,

R ^7a and R ^7b are methyl,

R ^8a , R ^8b and R ^8c are hydrogen,

L ⁶ is Ci-io-alkylene or phenylene,

Y ³ and Y ⁴ are independently of each other O or NR ⁵¹ , wherein R ⁵¹ is Ci-6-alkyl,

L ⁷ , L ⁹ and L ¹⁰ are independently of each other Ci-10-alkylene or Ci-io-alkylene-phenylene,

D ² is formula

wherein the bond marked with ^* is linked to

-Y ⁴ - ^■ L— S0 ₃ or -L ⁸ -Y ² - -S0 ₃ R ^s

J k L gg is an integer from 0 to 3,

hh is an integer from 0 to 2,

ii is an integer from 0 to 1 , and

R ⁵² are independently from each other selected from the group consisting of Ci-6-alkyl, OH, Nhb and N0 ₂ ,

R ⁹ is Ci-6-alkyl,

R ¹⁰ and R ¹¹ are independently from each other Ci-6-alkyl, which may be substituted with phenyl,

E is N, and

Z ² is

wherein

R ⁵⁵ is Ci-10-alkyl,

R ^102a and R ^103a are independently from each other Ci-6-alkyl,

aa is an integer from 1 to 12,

z is an integer from 2 to 25. In particular, the compounds of the present invention are of formula

a is 0

b is 0 or 1,

c is 0 or 1 ,

ris 0

s is 0

d is 0,

e is 0 or 1, and

f is 0 or 1, with the proviso that at least b or f is 1 , and with the proviso f is 0, then s, d and e are also 0, and that if b is 1 , then f is 0, and if f is 1 , then b is 0,

R ^1a and R ^1b are independently from each other methyl,

R ^2a , R ^2b and R ^2c are independently from each other hydrogen,

L ¹ is Ci-io-alkylene,

L ³ and L ⁵ are independently of each other Ci-2-alkylene or Ci-2-alkylene-phenylene, or L ² and R ³ or L ³ and R ³ together with the N linked to both of them form

R ³ , R ⁴ and R ⁵ are independently of each other Ci-6-alkyl or benzyl, or

R ⁴ and R ⁵ together with the N linked to both of them form

R ⁶ is methyl or benzyl,

D ¹ is of formula

wherein the bond marked with ^* is linked to R R

-X ⁴ - -L ⁴ -X ² - -N-R ⁵ or -X ⁴ - -L ⁴ -X ² - N— R

R dd is an integer from 0 to 3,

ee is an integer from 0 to 2,

ff is an integer from 0 to 1 , and

R ⁵⁰ are independently from each other selected from the group consisting of Ci-6-alkyl, OH, Nhb Z is

wherein

R ⁵³ is Ci-6-alkyl,

Riooa _anc | Rioia _{are me} thyl,

v is an integer from 2 to 6,

w is an integer from 5 to 20,

or of formula

wherein

o is 1, 2, 3, 4, 5, 6, 7 or 8, p is 8 - o, g is 0

hisOorl,

i is 0 or 1,

t is 0 or 1,

j is 0 or 1,

k is 0

I is 0 or 1 ,

q is 0 or 1 with the proviso that at least h or q is 1 , and with the proviso that if q is 0, then j, k and I are also 0, and that if h is 1 , then q is 0, and if q is 1 , then h is 0, R ^7a and R ^7b are methyl,

R ^8a , R ^8b and R ^8c are hydrogen,

L ⁶ is Ci-2-alkylene or phenylene,

Y ³ and Y ⁴ are independently of each other O or NR ⁵¹ , wherein R ⁵¹ is methyl,

L ⁷ , L ⁹ and L ¹⁰ are independently of each other Ci-2-alkylene or Ci-2-alkylene-phenylene,

D ² is formula

wherein the bond marked with ^* is linked to

-Y ⁴ - ^■ L— Y- S0 ₃ or -r- -L ⁸ -Y ² - -S0 ₃ R

| L gg is an integer from 0 to 3,

hh is an integer from 0 to 2,

ii is an integer from 0 to 1 , and

R ⁵² are independently from each other selected from the group consisting of Ci-6-alkyl, OH, NH2 and N0 ₂ ,

R ⁹ is methyl, R ¹⁰ and R ¹¹ are independently from each other Ci-e-alkyl, which may be substituted with phenyl,

E is N, and Z ² is

wherein

R ⁵⁵ is Ci-6-butyl,

R ^102a and R ^103a are methyl,

aa is an integer from 2 to 10,

z is an integer from 5 to 20.

Preferably, n is 1 , 2, 3, 4, 5, 6 or 7, and m is 8 - n. More preferably n is 1 , 2, 3, 4 or 5, and m is 8 - n Preferably, R ⁶ is methyl or benzyl.

Preferably, L ¹ is Ci-4-alkylene, preferably methylene.

Preferably, L ² , L ³ , L ⁴ and L ⁵ are independently of each Ci-4-alkylene or Ci-4-alkylene-phenylene, more preferably methylene, ethylene or phenylene-methylene, or

L ² and R ³ or L ³ and R ³ together with the N linked to both of them form

R ³ , R ⁴ and R ⁵ are independently of each methyl or benzyl,

R ⁴ and R ⁵ together with the N linked to both of them form

Preferably, R ⁵⁰ are independently from each other selected from the group consisting of OH and N0 ₂ . Preferably R ¹⁰⁰ and R ¹⁰¹ are methyl.

Preferably, R ⁵³ is butyl, R ^100a and R ^101a are methyl, v is 3, and w is an integer from 8 to 15, preferably 1 1 .

Preferably,

R ⁵⁴ is Ci-6-alkyl, more preferably ethyl,

x is an integer from 5 to 20, more preferably from 8 to 15, most preferably 12, and

y is an integer from 1 to 2, more preferably 1.

Preferably, R ⁹ is methyl.

Preferably, L ⁶ is Ci-4-alkylene or phenylene, more preferably l_6 is is methylene, ethylene or phenylene.

Preferably, Y ¹ , Y ² , Y ³ and Y ⁴ are independently of each other O or NR ⁵¹ , wherein R ⁵¹ is methyl.

Preferably, L ⁷ , L ⁸ , L ⁹ ' L ¹⁰ and L ¹¹ are independently of each other Ci-4-alkylene or Ci-4-alkylene- phenylene, preferably methylene, ethylene or methylene-phenylene.

Preferably, R ⁵² are independently from each other selected from the group consisting of OH and N0 ₂ .

Preferably, R ¹⁰ and R ¹¹ are independently from each other methyl, butyl or benzyl.

Preferably R ¹⁰² and R ¹⁰³ are methyl.

Preferably, R ⁵⁵ is butyl, R ^102a and R ^103a are methyl, aa is an integer from 2 or 10, and z is an integer from 8 to 15, preferably 1 1 .

Preferably,

R ⁵⁶ is Ci-6-alkyl, more preferably ethyl

bb is preferably an integer from 5 to 20, more preferably from 8 to 15, most preferably 12, and cc is an integer from 1 to 2, more preferably 1.

In particular preferred are the specific compounds of formulae (1A) or (1 B) disclosed in the examples.

The compounds of formula (1A) disclosed in the examples are (1A1 ), (1A2), (1A3), (1A4), (1A5), (1A6), (1A7), (1A8), (1A9) and (1A10).

The compounds of formula (1 B) disclosed in the examples are (1 B1 ) and (1 B2). Also part of the present invention, is a process for the preparation of the compounds of formula (1A), which process comprises the step of reacting a compound of formula

(2A) wherein

n is 1 , 2, 3, 4, 5, 6, 7 or 8,

m is 8 - n, a is 0 or 1 ,

b is 0 or ,

c is 0 or 1 ,

r is 0 or 1 ,

s is 0 or 1 ,

d is 0 or 1 ,

e is 0 or 1 ,

f is 0 or 1 , with the proviso that at least b or f is 1 , and with the proviso f is 0, then s, d and e are also 0, R ^1a and R ^1b are independently from each other Ci-4-alkyl,

R ^2a , R ^2b and R ^2c are independently from each other hydrogen or Ci- ₄ -alkyl, L ¹ is Ci-2o-alkylene, Ci-20-alkylene-phenylene, Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or C5-8-cycloalkylene, wherein L ¹ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH,

X ¹ , X ² , X ³ and X ⁴ are independently of each other O, S, C(O) or C(0)0,

L ² , L ³ , L ⁴ and L ⁵ are independently of each other Ci-20-alkylene, Ci-20-alkylene-phenylene,

Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or Cs-s-cycloalkylene, wherein L ² , L ³ , L ⁴ and L ⁵ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH, or

L ² and R ³ or L ³ and R ³ together with the N linked to both of them form a 5, 6 or 7 membered ring, or

L ⁵ and R ⁴ together with the N linked to both of them form a 5, 6 or 7 membered ring,

R ³ , R ⁴ and R ⁵ are independently of each other Ci-20-alkyl, which may be substituted with a sub- stituent selected from the group consisting of C6-i4-aryl, OCi-6-alkyl, and NO2, or

R ⁴ and R ⁵ together with the N linked to both of them form a 5, 6 or 7 membered ring, which may also include O or S,

D ¹ is a chromophoric moiety, which may be substituted with one or more R ⁵⁰ , wherein R ⁵⁰ are independently from each other selected from the group consisting of Ci-20-alkyl, C6-i4-aryl, halogen, OCi-6-alkyl, OH, NH ₂ and N0 ₂ , with a compound of formula

O

6 "

R— O-S-Z (3A)

wherein

R ⁶ is Ci-20-alkyl, which may be substituted with a substituent selected from the group consisting of Ce-14-aryl, OCi-e-alkyl, and NO2, and

Z ¹ is Ci-100-alkyl, wherein one or more methylene groups are replaced by -SiR ¹⁰⁰ R ¹⁰¹ -,

-SiR ¹⁰⁰ R ¹⁰¹ O-, -O- or -S-, with the proviso that -SiR ¹⁰⁰ R ¹⁰¹ -, -SiR ¹⁰⁰ R ¹⁰¹ O-, -O- or -S- are not directly linked to the S of

O

I I ₁

-o-s I I -z

O

J wherein R ¹⁰⁰ and R ¹⁰¹ are independently from each other Ci-6-alkyl. The compound of formula (2A) may be reacted with the compound of formula (3A) in the presence of an inert organic solvent. Examples of inert organic solvents are ethers such as dioxane, tetrahydrofuran or diethylether; and halogenated hydrocarbons such as chloroform. Preferably, the compound of formula (2A) is reacted with the compound of formula (3A) at a temperature in the range from 20 to 200 °C, preferably at a temperature in the range from 50 to 150 °C, more preferably at a temperature in the range from 50 to 1 10 °C.

The molar ratio of the compound of formula (3A)/compound of formula (2A) can be in the of 0.1 to 20, preferably in the range of 0.5 to 15, more preferably in the range of 0.7 to 10.

The compound of formula (2A) may be prepared by reacting a compound of formula

wherein

R ^1a and R ^1b are independently from each other Ci-4-alkyl, with a compound of formula

(5A) wherein a is 0 or 1 ,

b is 0 or 1 ,

c is 0 or 1 ,

r is 0 or 1 ,

s is O or l , d is 0 or 1 ,

e is 0 or 1 ,

f is 0 or 1 , with the proviso that at least b or f is 1 , and with the proviso f is 0, then s, d and e are also 0,

R ^2a , R ^2b and R ^2c are independently from each other hydrogen or Ci-4-alkyl,

L ¹ is Ci-2o-alkylene, Ci-20-alkylene-phenylene, Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or C5-8-cycloalkylene, wherein L ¹ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH,

X ¹ , X ² , X ³ and X ⁴ are independently of each other O, S, C(O) or C(0)0,

L ² , L ³ , L ⁴ and L ⁵ are independently of each other Ci-20-alkylene, Ci-20-alkylene-phenylene,

Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or Cs-s-cycloalkylene, wherein L ² , L ³ , L ⁴ and

L ⁵ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH, or

L ² and R ³ or L ³ and R ³ together with the N linked to both of them form a 5, 6 or 7 membered ring, or

L ⁵ and R ⁴ together with the N linked to both of them form a 5, 6 or 7 membered ring,

R ³ , R ⁴ and R ⁵ are independently of each other Ci-20-alkyl, which may be substituted with a sub- stituent selected from the group consisting of C6-i4-aryl, OCi-6-alkyl, and NO2, or

R ⁴ and R ⁵ together with the N linked to both of them form a 5, 6 or 7 membered ring, which may also include O or S, and

D ¹ is a chromophoric moiety, which may be substituted with one or more R ⁵⁰ , wherein R ⁵⁰ are independently from each other selected from the group consisting of Ci-20-alkyl, C6-i4-aryl, halogen, OCi-6-alkyl, OH, NH ₂ and N0 ₂ .

The compound of formula (4A) can be reacted with the compound of formula (5A) in the presence of an inert organic solvent. Examples of inert organic solvents are hydrocarbons such as toluene. The compound of formula (4A) can be reacted with the compound of formula (5A) in the presence of a catalyst. Suitable catalysts are for example platinum containing compounds such as hexachloroplatinic acid, also known as Speier's catalyst, or Pt.2[(CH2=CH2Si(Me)2)20]3, also known as Karstedt's catalyst, or various other catalysts described by N. Sabourault at al. in Org. Lett. 2002, 4(3), 21 17. The compound of formula (4A) is usually reacted with the com- pound of formula (5A) at a temperature in the range of 20 to 200 °C, preferably at a temperature in the range of 40 to 120 °C, more preferably at a temperature in the range of 60 to 100 °C. The compound of formula (4A), wherein R ^1a and R ^1b are methyl, may be prepared according to D. Hobbel et al., Z. Chem. 1989, 29(7), 260-261 or according to reference example C) of WO 2007/147742. Alternatively, compound (4A) can directly be bought from Sigma-Aldrich ("Al- drich"), St. Louis, MO, USA.

The compound of formula (5A) can be prepared by methods known in the art.

The compound of formula (3A) may be a compound of formula wherein R ⁶ is Ci-2o-alkyl, which may be substituted with a substituent selected from the group consisting of Ce-14-aryl, OCi-6-alkyl and NO2, and

Z ^1a is

wherein

R ⁵³ is Ci-6-alkyl,

R ^100a and R ^101a are methyl,

v is an integer from 2 to 6,

w is an integer from 5 to 20; or of formula

O

R— 0-S-Z ^{1 b} (3AY)

O wherein

R ⁶ is Ci-20-alkyl, which may be substituted with a substituent selected from the group consisting of Ce-14-aryl, OCi-6-alkyl, and NO2, and Z ^b is wherein

R ⁵⁴ is Ci-io-alkyl,

x is an integer from 5 to 25, and

y is an integer from 1 to 5.

The compound of formula (3AX) may be prepared by reacting a compound of formula

wherein

R ⁵³ is Ci-6-alkyl,

R100a _an( j R101a _{gre me} thyl,

w is an integer from 5 to 20; with a compound of formula

wherein

R ⁶ is Ci-2o-alkyl, which may be substituted with a substituent selected from the group consisting of Ce-14-aryl, OCi-6-alkyl, and NO2, and v is an integer from 2 to 6.

The compound of formula (6A) can be reacted with the compound of formula (7 A) in the presence of an inert organic solvent. Examples of inert organic solvents are hydrocarbons such as toluene. The compound of formula (6A) can be reacted with the compound of formula (7 A) in the presence of a catalyst. Suitable catalysts are for example platinum containing compounds such as hexachloroplatinic acid, also known as Speier's catalyst, or Pt2[(CH2=CH2Si(Me)2)20]3, also known as Karstedt's catalyst, or various other catalysts described by N. Sabourault at al. in Org. Lett. 2002, 4(3), 21 17. The compound of formula (6A) is usually reacted with the compound of formula (7A) at a temperature in the range of 0 to 160°C, preferably at a temperature in the range of 10 to 100 °C, more preferably at a temperature in the range of 15 to 40 °C.

The compound of formula is commercially available (Supplier ABCR).

The compound of formula (7A) can be prepared by methods known in the art.

The compounds of formula (3AY) can be prepared by reacting a compound of formula (10) O

" 1b

Hal-S-Z (10)

O wherein

Hal is halogen, preferably CI ,

Z ^b is wherein

R ⁵⁴ is Ci-io-alkyl,

x is an integer from 5 to 25, and

y is an integer from 1 to 5. with R ⁶ -0-Na, wherein

R ⁶ is Ci-2o-alkyl, which may be substituted with a substituent selected from the group consisting of Ce-14-aryl, OCi-6-alkyl, and NO2. The compounds of formula (10) are usually reacted with Na-O-R ⁶ in the presence of a suitable solvent such as methanol. The compounds of formula (10) are usually reacted with Na-O-R ⁶ at a temperature of around 0 °C. The compounds of formula (10) can be prepared by methods known in the art.

Also part of the present invention, is a process for the preparation of compounds of formula (1 B), which process comprises the step of reacting a compound of formula

(2B) wherein

0 is 1 , 2, 3, 4, 5, 6, 7 or 8,

p is 8 - o, g is 0 or 1 ,

h is 0 or 1 ,

1 is 0 or 1 ,

t is 0 or 1 , j is 0 or 1 ,

k is 0 or 1 ,

I is 0 or 1 ,

q is 0 or 1 with the proviso that at least h or q is 1 , and with the proviso that if q is 0, then j, k and I are also 0,

R ^7a and R ^7b are independently of each other Ci-4-alkyl,

R ^8a , R ^8b and R ^8c are independently from each other hydrogen or Ci-4-alkyl,

L ⁶ is Ci-2o-alkylene, Ci-20-alkylene-phenylene, Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or C5-8-cycloalkylene, wherein L ⁶ may be substituted with one or more substitutents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH ,

Y ¹ , Y ² , Y ³ and Y ⁴ are independently of each other NR ⁵¹ , O, S, C(O) or C(0)0, wherein R ⁵¹ is Ci-20-alkyl,

L ⁷ , L ⁸ , L ⁹ ' L ¹⁰ and L ^{1 1} are independently of each other Ci-20-alkylene, Ci-20-alkylene-phenylene or Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or Cs-s-cycloalkylene, wherein L ⁷ , L ⁸ , Ι_ ⁹ · L ¹⁰ and L ¹¹ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH , and

R ⁹ is Ci-10-alkyl, and

D ² is a chromophoric moiety, which may be substituted with one or more R ⁵² , wherein R ⁵² are independently from each other selected from the group consisting of Ci-20-alkyl, C6-i4-aryl, halogen, OCi-6-alkyl, OH , N H ₂ and N0 ₂ ,

with a compound of formula

10

R

p (3B)

_R 11^E^ _Z 2 wherein

R ¹⁰ and R ¹¹ are independently from each other Ci-20-alkyl, which may be substituted with one or more substituents selected from the group consisting of C6-i4-aryl, OCi-6-alkyl, and NO2,

E is N or P, and

Z ² is Ci-100-alkyl, wherein one or more methylene groups are replaced by -SiR ¹⁰² R ¹⁰³ -,

-SiR ¹⁰² R ¹⁰³ O-, -O- or -S-, with the proviso that -SiR ¹⁰² R ¹⁰³ -, -SiR ¹⁰² R ¹⁰³ O-, -O- or -S- are not directly linked to E, wherein R ¹⁰² and R ¹⁰³ are independently from each other Ci-6-alkyl. The compound of formula (2B) may be reacted with the compound of formula (3B) in the presence of an inert organic solvent. Examples of inert organic solvents are ethers such as dioxane or tetrahydrofuran, hydrocarbons such as toluene, and halogenated hydrocarbons such as chloroform. Preferably, the compound of formula (2B) is reacted with the compound of formula (3B) at a temperature in the range from 40 to 120 °C, preferably at a temperature in the range from 40 to 70 °C.

The molar ratio of the compound of formula (3B)/compound of formula (2B) can be in the range of 0.1 to 20, preferably in the range of 0.5 to 15, more preferably in the range of 0.7 to 10.

The compound of formula (2B) may be prepared by reacting a compound of formula

wherein

R ^7a and R ^7b are independently of each other Ci with a compound of formula

(5B) wherein

g is 0 or 1 ,

h is O or l ,

i is 0 or 1 ,

t is 0 or 1 ,

j is 0 or 1 ,

k is 0 or 1 ,

I is 0 or 1 , q is 0 or 1 with the proviso that at least h or q is 1 , and with the proviso that if q is 0, then j, k and I are also 0,

R ^7a and R ^7b are independently of each other Ci-4-alkyl,

R ^8a , R ^8b and R ^8c are independently from each other hydrogen or Ci-4-alkyl,

L ⁶ is Ci-2o-alkylene, Ci-20-alkylene-phenylene, Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or C5-8-cycloalkylene, wherein L ⁶ may be substituted with one or more substitutents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH,

Y ¹ , Y ² , Y ³ and Y ⁴ are independently of each other NR ⁵¹ , O, S, C(O) or C(0)0, wherein R ⁵¹ is Ci-20-alkyl,

L ⁷ , L ⁸ , L ⁹ ' L ¹⁰ and L ¹¹ are independently of each other Ci-20-alkylene, Ci-20-alkylene-phenylene or Ci-2o-alkylene-C5-8-cycloalkylene, phenylene or Cs-s-cycloalkylene, wherein L ⁷ , L ⁸ , L ⁹ < L ¹⁰ and L ¹¹ may be substituted with one or more substituents selected from the group consisting of halogen, OCi-6-alkyl, NO2 and OH, and

R ⁹ is Ci-10-alkyl, and D ² is a chromophoric moiety, which may be substituted with one or more R ⁵² , wherein R ⁵² are independently from each other selected from the group consisting of Ci-20-alkyl, C6-i4-aryl, halogen, OCi-6-alkyl, OH, NH ₂ and N0 ₂ .

The compound of formula (4B) can be reacted with the compound of formula (5B) in the presence of an inert organic solvent. Examples of inert organic solvents are hydrocarbons such as toluene. The compound of formula (4B) can be reacted with the compound of formula (5B) in the presence of a catalyst. Suitable catalysts are for example platinum containing compounds such as hexachloroplatinic acid, also known as Speier's catalyst, or Pt.2[(CH2=CH2Si(Me)2)20]3, also known as Karstedt's catalyst, or various other catalysts described by N. Sabourault at al. in Org. Lett. 2002, 4(3), 21 17. The compound of formula (4B) is usually reacted with the compound of formula (5B) at a temperature in the range of 20 to 200 °C, preferably at a temperature in the range of 40 to 120 °C, more preferably at a temperature in the range of 60 to 100 °C. The compound of formula (4B), wherein R ^7a and R ^7b are methyl, may be prepared according to D. Hobbel et al., Z. Chem. 1989, 29(7), 260-261 or according to reference example C) of WO 2007/147742. Alternatively, compound (4B) can directly be bought from Sigma-Aldrich ("Al- drich"), St. Louis, MO, USA.

The compound of formula (5B) can be prepared by methods known in the art. The compound of formula (3B) may be a compound of formula wherein

R ¹⁰ and R ¹¹ are independently from each other Ci-20-alkyl, which may be substituted with more substituents selected from the group consisting of C6-i4-aryl, OCi-6-alkyl, and NO2,

E is N or P, and

Z ^2a is

wherein

R ⁵⁵ is Ci-10-alkyl,

R ^102a and R ^103a are independently from each other Ci-6-alkyl,

aa is an integer from 1 to 12,

z is an integer from 2 to 25, or a compound of formula wherein

R ¹⁰ and R ¹¹ are independently from each other Ci-20-alkyl, which may be substituted with more substituents selected from the group consisting of C6-i4-aryl, OCi-6-alkyl, and NO2,

E is N or P, and

Z ^2b is wherein

R ⁵⁶ is Ci-io-alkyl,

bb is preferably an integer from 5 to 25,

cc is an integer from 1 to 5.

The compound of formula (3BX) may be prepared by reacting a compound of

wherein

R ⁵⁵ is Ci-io-alkyl,

R ^102a and R ^103a are independently from each other Ci-6-alkyl,

z is an integer from 2 to 25, with a compound of formula

wherein

aa is an integer from 1 to 12,

R ¹⁰ and R ¹¹ are independently from each other Ci-20-alkyl, which may be substituted with one or more substituents selected from the group consisting of C6-i4-aryl, OCi-6-alkyl, and NO2, E is N or P.

The compound of formula (6B) can be reacted with the compound of formula (7B) in the presence of an inert organic solvent. Examples of inert organic solvents are hydrocarbons such as toluene. The compound of formula (6B) can be reacted with the compound of formula (7B) in the presence of a catalyst. Suitable catalysts are for example platinum containing compounds such as hexachloroplatinic acid. The compound of formula (6B) is usually reacted with the compound of formula (7B) at a temperature in the range of 0 to 160°C, preferably at a temperature in the range of 10 to 100 °C, more preferably at a temperature in the range of 15 to 40 °C. The compound of formula is commercially available (Supplier ABCR).

The compound of formula (7B) can be prepared by methods known in the art.

The compounds of formula (3BY) can be prepared by reacting a compound of formula (12)

O

H ₃ C-S-0-Z ^2b (12)

o wherein

Z ^2b is wherein

R ⁵⁶ is Ci-io-alkyl,

bb is preferably an integer from

cc is an integer from 1 to 5.

/ ^E \ 10

H ^R wherein

R ¹⁰ and R ¹¹ are independently from each other Ci-20-alkyl, which may be substituted with more substituents selected from the group consisting of C6-i4-aryl, OCi-6-alkyl, and NO2,

E is N or P. The compounds of formula (12) is usually reacted with

10

H ^R in the presence of a suitable solvent such as dioxane. The reaction is usually performed at a temperature in the range of 5 to 50 °C, preferably 10 to 30 °C.

The compounds of formulae (1A) and (1 B) usually have an average particle size of 0.5 to 1 .5 nm, preferably from 0.8 to 1 .2 nm.

The compounds of formulae (1A) and (1 B) are coloured. The color of the compounds of formulae (1A) and (1 B) depends on the chromophoric moiety D ¹ and D ² .

For example, if the chromophoric moiety D1 is of formula

wherein dd is an integer from 0 to 3,

ff is an integer from 0 to 1 , and

R ⁵⁰ are independently from each other selected from the group consisting of Ci-20-alkyl, Ce-14-aryl, halogen, OCi-e-alkyl, OH , N H ₂ and NO2, the compound of formula (1A) is magenta.

For example, if the chromophoric moiety D ¹ is of formulae

wherein the bond marked with ^* is linked to

R R

-X ⁴ - - L ⁴ -X ² - -N-R ⁵ or -X ⁴ - -L ⁴ -X ² - N-R°

R ff is an integer from 0 to 1 , and

R ⁵⁰ are independently from each other selected from the group consisting of Ci-20-alkyl, Ce-14-aryl, halogen, OCi _-6 -alkyl, OH, NH ₂ and N0 ₂ , the compound of formula (1A) is yellow.

For example, if the chromophoric moiety D ¹ is of formula

wherein

dd is an integer from 0 to 3,

ff is an integer from 0 to 1 , and

R ⁵⁰ are independently from each other selected from the group consisting of Ci-20-alkyl, Ce-14-aryl, halogen, OCi-e-alkyl, OH, NH ₂ and NO2; the compound of formula (1A) is cyan.

For example, if the chromophoric moiety D ² is of formula

wherein gg is an integer from 0 to 3,

hh is an integer from 0 to 2,

ii is an integer from 0 to 1 , and R ⁵² are independently from each other selected from the group consisting of Ci-20-alkyl, Ce -aryl, halogen, OCi-e-alkyl, OH, NH ₂ and NO2, the compound of formula (1 B) is magenta.

For example, if the chromophoric moiety D ² is of formula

wherein the bond marked with ^* is linked to

-Y ⁴ - ^■ L— Y- SO3 or -L ⁸ -Y ² - -SO3R

| L ii is an integer from 0 to 1 , and

R ⁵² are independently from each other selected from the group consisting of Ci-20-alkyl,

Ce -aryl, halogen, OCi _-6 -alkyl, OH, NH ₂ and N0 ₂ , the compound of formula (1 B) is yellow.

For example, if the chromophoric moiety D ² is of formula

O N H n ^(r52) wherein

gg is an integer from 0 to 3,

ii is an integer from 0 to 1 , and R ⁵² are independently from each other selected from the group consisting of Ci-20-alkyl,

Ce-14-aryl, halogen, OCi-e-alkyl, OH, NH ₂ and NO2, the compound of formula (1 B) is cyan.

The compounds of formulae (1A) or (1 B) can be used in electronic displays, paints, lacquers, electrostatic toners, inks, additives to plastic and polymers, sealants, color filters, in printing systems, LED coatings, packaging, tagging and labeling applications. Also part of the present invention is the use of the compounds of formulae (1 A) or (1 B) as charged colored particles in electrophoretic devices, preferably in electrophoretic displays, more preferably in electronic paper.

Also part of the present invention is an electrophoretic device comprising compounds of formula (1A) or compounds of formula (1 B). Preferably, the electrophoretic device is an electrophoretic display, more preferably electronic paper. The electronic device can be flexible.

The electrophoretic device comprising compounds of formula (1A) or compounds of formula (1 B) can be prepared by a process comprising the steps of (i) forming a dispersion of the com- pounds of formula (1A) or (1 B) in a dielectric fluid, and (ii) placing the dispersion obtained in step (i) between a pair of electrodes.

The dielectric fluid is preferably dodecane or a silicon oil having a viscosity which suits this application. The dispersion obtained in step (i) can contain further additives known to a person skilled in the art. The dispersion obtained in step (i) can be encapsulated in microcapsules or incorporated in foils containing microcavities by methods known to a person skilled in the art before being placed between the pair of electrodes in step (ii).

The compounds of formulae (1A) and (1 B) are charged colored particles suitable for use in full- color electronic paper.

The charged colored particles of the present invention have an average particle size of 0.5 to 1 .5 nm, preferably 0.8 to .2 nm, and show a narrow size distribution. Thus, the charged colored particles of the present invention are suitable for use in video applications based on CMY technology. The charged coloured particles of the present invention form homogeneous dispersions in dielectric fluids such as dodecane. The Zeta potential of the charged coloured partricles of the present invention in dodecane is above -30 mV and below +30 mV. The dispersion in dodecane has a viscosity (at 25 °C) of below 5 mNs/m ² . The dispersion in dodecane has a resistivity of about 10 ¹⁰ Qcm. The relative permittivity of the dispersion in dodecane is about 2. In additon, the charged coloured particles show a high colour strength.

The process for the preparation of the charged coloured particles of the present invention is advantageous, as the process allows a convenient purification, respectively, isolation of the charged coloured particles. In particular, the process does not produce the charged coloured particles along with considerable high amounts of unwanted by-products such as water or sodium iodide, which are tedious to remove. In addition, the process allows the targeted preparation of the charged coloured particles, consisting of defined supra-molecular structures of the pre- sent invention, in particular with regard to the number of charges.

Examples:

Parts or percentages are by weight. Example 1

Preparation of compound 3AX1

(9a) (8a)

(3AX1 )

Preparation of compound 9a

A mixture of 50.0 g 3-butenyl-bromide (Aldrich) and 54.2 g disodium sulfite are refluxed in 300 ml water until all bromide is consumed (TLC). The mixture is cooled and extracted with diethylether, the aqueous phase is evaporated to dryness and the resulting solid is dried in vacuum at 130 °C. 56 g of compound 9a are obtained sufficiently pure for further elaboration Preparation of compound 8a

A mixture of 50.5 g of crude compound 9a and 48 ml of phosphoryl chloride are refluxed for four hours. Excess phosphoryl chloride is then distilled off in vacuum (100 mbar) and the resulting residue is taken up in dichloromethane and poured on ice-water. The organic phase is washed with water, dried over sodium sulfate and evaporated giving a liquid which is distilled (65 °C, 0.35 mbar) resulting in 14.6 g of compound 8a as a colorless liquid. ¹ H-NMR (CDCI ₃ , 300 MHz): δ 2.79 (dt, 2 H); 3.74 (t, 2 H); 5.20 (ddt, 2 H); 5.84 (m, 1 H). ³ C-NMR (CDC , 75 MHz): δ 28.38; 64.40; 1 18.79; 131 .90. Prepara tion of compound 7Aa 1

A solution of 5.3 g of compound 8a in 15 ml of dry methanol is treated with one equivalent of sodium methanolate at 0 °C until compound 8a is consumed. The mixture is filtered and the methanol solution diluted with diethyl ether and filtered again to remove sodium chloride.

Evaporation of the solvent leaves 4.7 g of compound 7Aa1. ¹ H-NMR (CDCb, 300 MHz): δ 2.60 (dt, 2 H); 3.19 (t, 2 H); 3.90 (s, 3 H); 5.17 (ddt, 2 H); 5.84 (m, 1 H). ³ C-NMR (CDCb, 75 MHz): δ 27.58; 48.89; 55.35; 1 17.46; 133.58.

Preparation of compound 3AX1

A mixture of 29.5 g commercial polydimethylsiloxane (6A1 ) (supplier ABCR) and 4.0 g of compound 7Aa1 is dissolved in 75 ml of toluene in an argon atmosphere and treated with 0.9 ml of a solution of hexachloro platinic acid in iso-propanol (10% (w/v)) until compound 6A1 is consumed. The mixture is subsequently evaporated and filtered over a small pad of silica (eluent: hexane - ethyl acetate (20 - 1 )) to remove the catalyst. Evaporation leaves 19.3 g of compound 3AX1 as colorless oil. H-NMR (CDCb, 400 MHz): δ 0.08 (Si(CH ₃ ) ca. 72 H); 0.59 (dt, 4 H); 0.89 (t, 3 H); 1 .26 (m, 4 H); 1 .51 (quint,. 2 H); 1 .91 (quint. 2 H); 3.12 (t, 2 H); 3.91 (s, 3 H). 3C-NMR (CDCb, 100 MHz): δ 0.09; 1 .03; 13.78; 17.69; 17.94; 22.12; 25.43; 26.34; 26.80;

54.88.

Example 2

Preparation of compound 3AX2

(3AX2) Preparation of compound 9a and 8a

Compounds 9a and 8a are prepared as described in example 1.

Preparation of compound 7Aa2

Compound 7Aa2 is prepared as described for compound 7Aa1 in example 1 , but methanol and methanolate are replaced by ethanol and ethanolate. 2.0 g of compound 7Aa2 are obtained from 2.0 g of compound 8a. H-NMR (CDCI ₃ , 300 MHz): δ 1 .42 (t, 3 H); 2.60 (dt, 2 H); 3.18 (t, 2 H); 4.30 (q, 2 H); 5.14 (ddt, 2 H); 5.82 (m, 1 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 15.12; 27.65; 49.66; 66.13; 1 17.37; 133.69. Preparation of compound 3AX2

Compound 3AX2 is prepared in analogy to compound 3AX1 in example 1. 2.7 g of compound 3AX2 are obtained from 0.7 g of the compound 7Aa2 and 3.0 g of the compound 6A1. ¹ H-NMR (CDCI3, 300 MHz): δ 0.08 (Si(CH ₃ ) ca. 72 H); 0.55 (dt, 4 H); 0.82 (t, 6H); 1 .33 (m, 6 H); 1 .51 (quint,. 2 H); 1.79 (quint. 2 H); 3.00 (t, 2 H); 4.22 (quart. 2 H). ³ C-NMR (CDCI3, 75 MHz): δ 0.07; 0.14; 1 .01 ; 13.76; 15.12; 17.70; 17.93; 22.12; 25.42; 26.33; 26.85; 50.24; 65.64. Example 3

Preparation of compound 3AX3

(3AX3)

Preparation of compounds 9a and 8a

Compounds 9a and 8a are prepared as described in example 1.

Preparation of compound 7Aa3

Compound 7Aa3 is prepared as described for compound 7Aa1 in example 1 , but methanol and methanolate are replaced by benzylalcohol and benzylate. 6.0 g of compound 7Aa3 are obtained from 6.0 g of compound 8a. ¹ H-NMR (CDCI ₃ , 300 MHz): δ 2.57 (m, 2 H); 3.10 (t, 2 H); 5.10 (d, 2 H); 5.26 (s, 2 H); 5.76 (ddt, 1 H); 7.43 (s, 5 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 27.60; 50.43; 71.31 ; 1 17.41 ; 128.89; 129.38; 133.57.

Preparation of compound 3AX3

Compound 3AX3 is prepared in analogy to compound 3AX1 in example 1. 2.5 g of compound 3AX3 are obtained from 0.6 g of the compound 7Aa3 and 3.0 g of the compound 6A1. ¹ H-NMR (CDCI3, 300 MHz): δ 0.02 (s, ca. 84 H); 0.44 (dt, 4 H); 0.80 (t, 3 H); 1.27 (m, 6 H); 1.75 (quint. 2 H); 2.92 (t, 2 H); 5.18 (s, 2 H); 7.31 (s, 5 H). ³ C-NMR (CDCI3, 75 MHz): δ 0.07; 0.16; 1 .04; 13.79; 17.65; 17.95; 22.05; 25.44; 26.35; 26.79; 50.97; 70.96; 128.84; 129.28; 133.72. Example 3a

Preparation of compound 8b

(9b) (8b)

Preparation of compound 9b

Compound 9b is prepared in analogy to compound 9a in example 1 . 31.2 g of compound 9b are obtained from 20 ml allylbromide and 34.9 g of sodium sulfite in 150 ml water. Prepara tion of compound 8b

Compound 8b is prepared in analogy to compound 8a in example 1 . 20.6 g of compound 8b are obtained from 55.0 g of crude compound 9b and 56 ml of phosphoryl chloride. ¹ H-NMR (CDC , 400 MHz): δ 4.39 (d, 2 H); 5.67 (dt, 2 H); 6.00 (ddt, 1 H). ³ C-NMR (CDCb, 100 MHz): δ 68.8; 123.1 ; 127.8.

Example 3b

Preparation of compound 8c

Preparation of compound 9c

Compound 9c is prepared in analogy to compound 9a in example 1. 4.1 g of compound 9c are obtained from 3.0 ml 5-hexenylbromide and 3.4 g of sodium sulfite in 15 ml water.

Preparation of compound 8c

Compound 8c is prepared in analogy to compound 8a in example 1 . 20.6 g of compound 8c are obtained from 55.0 g of crude compound 9c and 56 ml of phosphoryl chloride. ¹ H-NMR (CDCb, 400 MHz): δ 1.58 (quint. 2 H); 1.86 (quint. 2H); 2.14 (quart. 2 H); 3.16 (t 2H); 5.05 (m, 2 H); 5.78 (ddt 1 H). ¹³ C-NMR (CDCb, 100 MHz): δ 23.3; 27.4; 33.1 ; 55.1 ; 1 15.4; 137.7. Example 4

Preparation of compound 3AY1

(3AY1 )

Preparation of compound 12a

A solution of 20.0 g of commercial polyethyleneglycolethyl ether (Fluka) in 3.1 ml of pyridine and 100 ml of dichloromethane is treated with 2.9 ml methane sulfonylchloride at 0 °C for 24 h. The mixture is subsequently diluted with 50 ml dichloromethane and extracted successively with 1 N hydrochloric acid, satured sodium hydrogen carbonate solution and brine. Evaporation of the organic phase leaves 20.6 g of colorless compound 12a. ¹ H-NMR (CDCI ₃ , 300 MHz): δ 3.08 (s, 3 H); 3.38 (s, 3 H); 3.69 (m, ca. 45 H); 4.38 (t, 2 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 37.72; 59.01 ; 69.01 ; 69.30; 70.56; 71 .92. Preparation of compound 11a

A mixture of 10.0 g of compound 12a and 2.4 g sodium sulfite in 30 ml of water is refluxed for 24 h, cooled to room tempaerature and extracted with diethyl ether. The aqueous phase is subsequently evaporated to dryness and stored at 1 10 °C and 100 mbar to give 4.0 g of a sticky compound 1 1a, which is used without further purifications.

Preparation of compound 10a

Compound 10a is prepared as described for compound 8a in example 1 . 4.1 g of compound 10a are obtained from 4.0 g of crude compound 11a and 10 ml of phosphoryl chloride. ¹ H-NMR (CDCIs, 300 MHz): δ 3.65 (m). ³ C-NMR (CDC , 75 MHz): δ 42.72; 52.58; 53.51 ; 62.79; 68.80; 70.57; 70.82; 71 .29; 71 .35. Preparation of compound 3AY1

Compound 3AY1 is prepared in analogy to compound 7Aa1 in example 1. 3.9 g of compound 3YA1 are obtained from 4.1 g of crude compound 10a in 13 ml of methanol and 1 .1 equivalent sodium methoxide. ¹ H-NMR (CDCI ₃ , 300 MHz): δ 3.49 (m, 5 H); 3.71 (m, ca. 46 H); 3.92 (s, 3 H).

Example 5

Preparation of yellow compound

(5A1) (15)

Preparation of compound 16

A solution of 20.0 g of morpholine in 600 ml chloroform is successively treated with 40.0 g of p-nitrobenzylchloride and 24.0 g of sodium carbonate at 65 °C for 18 h. Usual work-up and purification by column chromatography (eluent: hexane - ethyl acetate (8 - 10)) gives 40.4 g of compound 16. H-NMR (CDCI ₃ , 300 MHz): δ 2.43 (m, 4 H); 3.56 (s, 2 H); 3.68 (m, 4 H); 7.49 (d, 2 H); 8.12 (d, 2 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 53.59; 62.40; 66.65; 123.45; 129.50; 145.94; 147.15.

Preparation of compound 15

A mixture of 250 ml of dioxane and 80 ml of concentrated hydrochloric acid is charged under vigourous stirring with 30.0 g tin granules and 34.8 g of compound 16. The mixture is stirred at 35 °C until compound 16 is consumed, filtered and diluted with ethyl acetate. Usual extraction procedures leave 23.4 g of compound 15. H-NMR (CDCI ₃ , 300 MHz): δ 2.43 (t, 4 H); 3.40 (s, 2 H); 3.67 (broad, NH ₂ ); 3.69 (t, 4 H); 6.64 (d, 2 H); 7.13 (d, 2 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 53.50; 63.04; 67.02; 1 14.87; 127.39; 130.40; 145.58.

Preparation of yellow compound 5A1

A solution of 10 ml satured sodium carbonate is charged with 1.0 g 4-chloro-3-nitro-benzene- allylsulfonamide and 0.6 g of compound 15 and stirred at 100 °C for 8 h until compound 15 is consumed. After cooling down the mixture is diluted with dichloromethane and worked-up in the usual extractive manner to give 1 .0 g of yellow compound 5A1 after purification by column chromatography (eluent: hexane - ethyl acetate (4 - 6)). ¹ H-NMR (CDCI ₃ , 300 MHz): δ 2.43 (t, 4 H); 3.49 (s, 2 H); 3.57 (NH); 3.67 (t, 4 H);5.08 (ddd, 2 H); 5.69 (ddt, 1 H); 7.17 (d, 1 H); 7.21 (d, 2 H); 7.39 (d, 2 H); 7.71 (dd 1 H); 8.65 (dd, 1 H); 9.74 (NH). ³ C-NMR (CDCI3, 75 MHz): δ 45.66; 53.53; 62.66; 66.90; 1 16.59; 1 17.60; 125.07; 126.93; 128.43; 130.65; 131.47; 133.04; 133.26; 134.13; 136.99; 145.73.

Example 6

Preparation of magenta compound 5A2

(18)

(5A2) Preparation of compound 19

31 .0 g of 1 -amino-4-hydroxyanthrachinone are dissolved in 300 ml of nitrobenzene and heated to 100 °C in an argon atmosphere. During one hour 23.0 g of bromine are dropped into that mixture which is subsequently heated to 130 °C for additional three hours. After cooling down to room temperature the mixture is poured into 100 ml methanol and filtered. The residue is thouroughly washed with methanol and hexane and finally dried at 100 °C in vacuum. By concentrating the mother liquors an additional crop of compound 19 is obtained resulting in an overall yield of 33.9 g. H-NMR (CDCI3, 300 MHz): δ 7.03 (s, 1 H); 7.55 (m, 2 H); 8.03 (m, 2 H).

Preparation of compound 18

55.0 g para-aminophenol and 60.0 g of allylbromide are dissolved in 300 ml ethanol and treated at reflux with 35.0 g potassium carbonate until para-aminophenol is consumed. The mixture is filtered while hot and the organic phase is evaporated. The resulting residue is chromatographed on silica gel (eluent: hexane - ethyl acetate (10 - 1 )) to give 10.1 g of compound 18. H-NMR (CD ₃ OD, 300 MHz): δ 3.66 (d, 2 H); 3.88 (OH, NH); 5.1 1 (d, 1 H); 5.24 (d, 1 H); 5.94 (ddt, 1 H); 6.65 (m, 4 H). ³ C-NMR (CD ₃ OD, 100 MHz): δ 1 15.09; 1 15.43; 1 15.53; 135.92; 141.42; 149.32.

Preparation of magenta compound 5A2

A suspension of 1.0 g cesium carbonate in 2 ml dimethylformamide is charged with 1 .0 g of compound 19 and 0.5 g compound 18 and heated to 80 °C until compound 19 is consumed. The mixture is subsequently dropped into water und the precipitate filtered off, dissolved in ethyl acetate, dried over sodium sulfate yielding 1.0 g of magenta compound 5A2 after removal of solvent. H-NMR (CDCI ₃ , 300 MHz): δ 3.80 (d, 2 H); 5.27 (dd, 2 H); 5.93 (ddt, 1 H); 6.39 (s, 1 H); 6.68 (m, 2 H); 6. 97 (m, 2 H); 7.75 (m, 2 H); 8.33 (M, 2 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 46.75; 107. 86; 108.21 ; 109.08; 1 13.96; 1 14.49; 1 16.14; 1 16.56; 121 .99; 126.28; 126.77; 132.80;

133.44; 133.52; 135.00; 139.17; 144.27; 146.37; 156.52; 159.91 ; 183.16; 185.18.

Example 7

Preparation of magenta compound 5A3

(20)

(5A3)

Preparation of compound 19

Compound 19 is prepared as described in example 6.

Preparation of compound 20

10.0 g of para-N-methylaminophenol and 7.5 ml of allybromide are heated to 40 °C in 60 ml water containing 12.2 g sodium hydrogencarbonate for four hours. The mixture is then extracted with ethyl acetate. Usual work-up and column chromatograpgy over silica gel (eluent: ethyl acetate) gives 4.6 g of compound 20. H-NMR (CD ₃ OD, 300 MHz): δ 2.75 (s, 3 H); 3.33 (d, 2 H); 5.16 (dd, 2 H); 5.84 (ddt, 1 H); 6.71 (dd, 4 H). ³ C-NMR (CD ₃ OD, 100 MHz): δ 38.45; 57.39; 1 15.62; 1 16.24; 1 16.76; 134.46; 143.76; 149.68.

Preparation of magenta compound 5A3

Compound 5A3 is prepared in analogy to compound 5A2 in example 6. 4.7 g of magenta compound 5A3 are obtained from 3.5 g of compound 20 and 6.2 compound 19. ¹ H-NMR (CDCIs, 300 MHz): δ 3.00 (s, 3 H); 3.96 (d, 2 H); 5.21 (dd, 2 H); 5.89 (ddt, 1 H); 6.40 (s, 1 H); 6.77 (d, 2 H); 7.01 (d 2 H); 7.77 (m, 2 H); 8.35 (dd, 2 H). ³ C-NMR (CDCIs, 75 MHz): δ 38.40; 55.56; 107.86; 108.21 ; 109.08; 1 13.46; 1 16.46; 120.73; 126.26; 126.77; 132.75; 133.33;

133.41 ; 133.49; 135.00; 139.19; 143.54; 147.83; 156.61 ; 159.95; 183.14; 185.15.

Example 8

Preparation of magenta compound 5A4

Prepara tion of compound 22

12.0 g of tyramine and 9.3 g of benzaldehyde are strirred in 250 ml of methanol containing 100 g of activated molecular sieves (4A) for 24 h. The mixture is then filtered, cooled to 0 °C and treated with excess solid sodium boronate for 3 h. The solvent is then evaporated and the residue taken up in a small volume of brine and extracted with diethyl ether, yielding after usual work-up 13.7 g of compound 22. H-NMR (CD ₃ OD, 300 MHz): δ 2.76 (m, 2 H); 2.85 (m, 2 H); 3.81 (s, 2 H); 6.73 (d, 2 H); 7.01 (d, 2 H); 7.30 (m, 5 H). ³ C-NMR (CD ₃ OD, 100 MHz): δ 33.64; 49.59; 52.63; 1 14.98; 127.17; 128.26; 128.35; 129.20; 138.01 ; 155.85. Preparation of compound 21

9.0 g of compound 22 and 2.8 ml allylbromide are refluxed in 25 ml of acetonitrile containg 6.8 g of potassium carbonate and 0.1 g sodium iodide for 24 h. Filtration and evaporation of solvent gives a residue which is taken up in ethyl acetate and acidified with 1 N hydrochloric acid to pH = 3. The aqueous phase is separated and repeatedly extracted with ethyl acetate to give after removal of solvent 7.0 g of compound 21 as a white solid. ¹ H-NMR (CD ₃ OD, 300 MHz): δ 2.80 (m, 4 H); 3.28 (d, 2 H); 3.78 (s, 2 H); 5.28 (dd, 2 H); 6.00 (dddt, 1 H); 6.76 (d, 2 H); 7.02 (d, 2 H); 7.40 (m, 5 H). ¹³ C-NMR (CDC , 75 MHz): δ 31.85; 55.19; 56.51 ; 57.98; 1 15.65; 1 18.33;

127.24; 128.38; 129.44; 129.82; 131 .80; 134.92; 138.15; 154.39.

Preparation of compound 19

Compound 19 is prepared as described in example 6. Preparation of magenta compound 5A4

Compound 5A4 is prepared in analogy to compound 5A2 in example 6. 7.2 g of magenta compound 5A4 are obtained from 5.9 g of compound 21 and 6.5 g of compound 19. ¹ H-NMR (CDCb, 300 MHz): δ 2.78 (m, 4 H); 3.18 (d, 2 H); 5.17 (d, 1 H); 5.27 (d, 1 H); 5.91 (ddt, 1 H); 6.35 (s, 1 H); 7.03 (d, 2 H); 7.20 (d, 2 H); 7.30 (m, 5 H); 7.73 (m, 2 H); 8.30 (m, 2 H). ³ C-NMR (CDCb, 75 MHz): δ 32.97; 55.02; 56.85; 58.20; 108.52; 1 17.41 ; 120.82; 126.31 ; 126.93;

128.24; 128.81 ; 130.70; 132.85; 133.37; 133.61 ; 134.95; 135.82; 138.71 ; 139.45; 151 .53;

155.51 ; 159.69; 169.20; 183.16; 185.38.

Example 9

Preparation of magenta compound 5A5

(5A5)

Preparation of compound 23

10.6 g of 4-hydroxyphenethylbromide and 3.9 g of N-methylallylamine are dissolved in 100 ml of chloroform containing 5.6 g of potassium carbonate and heated to reflux for 3 d. The mixture is then filtered and evaporated. The residue is chromatographed on silica gel (eluent:

dichloromethane - methanol (10 - 1.5)) to give 5.8 g of compound 23. ¹ H-NMR (CDCI ₃ , 300 MHz): δ 2.36 (s, 3 H); 2.74 (m, 4 H); 3.16 (d, 2 H); 5.23 (dd, 2 H); 5.91 (ddt, 1 H); 6.74 (d, 2 H); 7.01 (d, 2 H). ³ C-NMR (CDCIs, 75 MHz): δ 32.03; 41 .46; 54.94; 60.65; 1 15.78; 1 19.23; 129.66; 130.52; 133.70; 155.26. Preparation of compound 19

Compound 19 is prepared as described in example 6.

Preparation of magenta compound 5A5

Compound 5A5 is prepared in analogy to compound 5A2 in example 6. 1 1.8 g of magenta compound 5A5 are obtained from 7.6 g of compound 23 and 14.0 g of compound 19. ¹ H-NMR

(CDCIs, 300 MHz): δ 2.35 (s, 3 H); 2.67 (m, 2 H); 2.85 (m, 2 H); 3.1 1 (d, 2 H); 5.19 (d, 1 H); 5.25

(d, 1 H); 5.90 (ddt, 1 H); 6.37 (s, 1 H); 7.08 (d, 2 H); 7.30 d, 2 H); 7.75 (m, 2 H); 8.31 (dd, 2 H).

¹³ C-NMR (CDCI3, 75 MHz): δ 33.25; 42.03; 58.81 ; 60.84; 108.55; 109.32, 1 17.85; 120.96;

126.28; 126.77; 130.60; 132.82; 133.32; 133.53; 134.91 ; 135.34; 138.56; 139.07; 151 .65;

155.42; 159.41 ; 183.1 1 ; 185.36. Example 9a

Preparation of cyan compound 5A6

(5A6)

Preparation of compound 26

A mixture of 1 .55 g o f dry sodium carbonate, 0.85 g of N-allylmethyl amine and 2.00 g of compound 25 are suspended in 25 ml of chloroform and refluxed for 48 h. The mixture is filtered and the solvent evaporated to leave 2.40 g of compound 26 as an oil. ¹ H-NMR (CDC , 300 MHz): 2.18 (s, 3 H); 3.03 (dt, 2 H); 3.55 (s, 2 H); 5.17 (dd, 2 H); 5.88 (ddd, 1 H); 7.45 (t, 1 H); 7.64 (d, 1 H); 8.07 (ddd, 1 H); 8.17 (d, 1 H). ³ C-NMR (CDCb, 75 MHz): 42.0; 60.5; 1 17.8; 121.9; 123.5; 129.1 ; 134.9; 135.4; 141.7; 148.3.

Preparation of compound 27

The compound 26 is dissolved in 25 ml dioxane containing 2.2 g of tin granules and treated with 6.2 ml cone, hydrogenchloride at room temperature dropwise. The mixture is filtered, diluted with ethyl acetate and neutralized with sodium hydroxide solution (2 N). Separation and evaporation of the organic puhase leaves an oily residue which is further purified over silicagel (eluent: hexane - ethyl acetate: 1 - 1 ) to yield 1 .40 g of compund 27. ¹ H-NMR (CDCb, 300 MHz): 2.20 (s, 3 H); 3.06 (dt, 2 H); 3.59 (s, 2 H); 5.20 (dd, 2 H); 5.93 (ddd, 1 H); 6.57 (dd, 1 H); 6.71 (s, 1 H); 6.73 (dd, 1 H); 7.12 (t, 1 H). ³ C-NMR (CDCb, 75 MHz): 43.1 ; 60.6; 61 .8; 1 13.9; 1 15.7; 1 17.6; 1 19.4; 129.1 ; 135.9; 140.2; 146.5.

Preparation of compound 5A6

A mixture of 0.50 g of compound 28, obtained according to FR 1410259, and 0.34 g of compound 27 are heated in 10 ml of cellosolve for 2 h at 130 °C. The mixture is cooled to room temperature and filtered, and the residue washed with methanol and diethyl ether to give 0.51 g of cyan compound 5A6. H-NMR (CDCIs, 300 MHz): 2.26 (s, 3 H); 3.1 1 (d, 2 H); 3.61 (s, 2 H); 5.22 (ddd, 2 H); 5.96 (ddd, 1 H); 6.57 (dd, 1 H); 7.36 (t, 1 H); 7.50 (m, 3 H); 7.77 (dd, 2 H); 8.26 (dd, 2 H). ³ C-NMR (CDCIs, 75 MHz): 42.1 ; 60.5; 61.2; 1 17.7; 1 19.3; 1 19.5; 124.4; 126.6; 126.8; 128.8; 129.0; 133.5; 133.7; 135.7; 140.6; 140.9; 167.3; 184.8.

Example 9b

Preparation of cyan compound 5A7

(5A7)

Preparation of compound 29

In analogy to the preparation of compound 26 in example 9a, compound 29 is obtained from 5.75 g of compound 25 and 8.50 g of N-allylundecenylamine to give 8.60 g of compound 29. ¹ H- NMR (CDCIs, 300 MHz): 0.89 (t, 3 H); 1 .40 (m, 25 H); 2.03 (2 H); 2.43 (t, 4 H); 3.64 (s, 2 H); 4.94 (ddd, 2 H); 5.83 (ddd, 1 H); 7.47 (t, 1 H); 7.69 (d, 1 H); 8.08 (dd, 1 H); 8.21 (dd, 1 H). ³ C- NMR (CDCIs, 75 MHz): 1 1.0; 22.6; 24.9; 27.1 ; 27.4; 28.5; 29.1 ; 29.4; 29.5; 29.6; 30.7; 30.8; 53.9; 56.1 ; 1 14.1 ; 121 .7; 123.4; 128.8; 134.6; 139.2; 144.6; 148.3. Prepara tion of compound 30

In analogy to the preparation of compound 27 in example 9a, compound 30 is obtained from 8.5 g of compound 29 and 7. 80 g tin granules in 5.00 ml cone, hydrogenchloride and 40 ml dioxane. Purification of the crude oil (silicagel eluent: ethyl acetate - hexane: 2 - 1 ) yields 5.10 g of compound 30. H-NMR (CDCIs, 300 MHz): 0.89 (t, 3 H); 1 .39 (m, 25 H); 2.06 (2 H); 2.45 (t, 4 H); 3.57 (s, 2 H); 4.98 (ddd, 2 H); 5.82 (ddd, 1 H); 6.57 (t, 1 H); 6.72 (dd, 1 H); 6.93 (t, 1 H); 7.12 (dd, 1 H). ³ C-NMR (CDCI ₃ , 75 MHz): 14.1 ; 22.7; 26.5; 26.9; 27.4; 28.9; 29.1 ; 29.5; 29.6; 29.7; 29.8; 31.7; 33.8; 53.7; 58.5; 1 13.0; 1 13.8; 1 14.1 ; 1 19.5; 123.9; 139.2; 148.4; 154.3.

Preparation of compound 5A7

A mixture of compound 28 (3.1 g) and methoxy ethanol (15 ml) is heated under argon to 120 °C until complete dissolution. Thereafter, a solution of compound 30 (2.3 g) in methoxy ethanol (10 ml) is added dropwise under vigorous stirring. The reaction mixture is heated for 24 h and then cooled using an ice bath. The resulting precipitate is filtered off and washed with ethanol. The mother liquor is collected and furher diluted with methanol to harvest a second crop of product. The combined material is purified by silica gel chromatography (eluent: dichloromethane/ methanol : 20/1 ) to give 2.3 g of compound 5A7. H-NMR (CDCI ₃ , 300 MHz): 0.99 (t, 3 H); 1.33 (m, 14 H); 1 .44 (m, 4 H); 1.95 (dt, 2 H); 2.41 (m, 4 H); 4.2 (d, 2 H); 4.89 (ddd, 2 H); 5.74 (ddd, 1 H); 6.7 (broad, NH ₂ ), 7.19 (m, 1 H); 7.45 (m, 3 H); 7.43 (dd, 2 H); 8.23 (dd, 2 H); 8.9 (broad, NH2). ¹³ C-NMR (CDCI3, 75 MHz): 14.2; 22.7; 27.1 ; 27.4; 28.9 (2C); 29.2 (2C); 29.5; 29.7; 31.6; 32.6 (2 C); 53.7; 53. 8; 53.9; 1 14.1 ; 1 18.4; 1 19.3; 126.6; 128.8; 128. 9; 129.1 ; 131 .9; 133.3 (2 C); 133.6 (4 C); 139.2; 140.8 (2 C); 153.9; 162 (2 C); 167.3 (2 C); 184.6 (2 C).

Preparation of compound 34

17 g of commercial tyramine and 42 ml of di-isopropyl ethylamine are dissolved in 300 ml of dry dimethyl formamide at 0 °C. To this mixture are added dropwise 30.1 g of undecylenic acid chloride. The clear solution is stirred for 16 h and thereby slowly warmed to room temperature. The solution is diluted with water and ethyl acetate, the organic phase separated and successively extracted with 1 N hydrogenchloride, brine and water. The organic phase is then dried over sodium sulfate, filtered and evaporated to give 36.4 g of compound 34 as a slightly yellow oil, which crystalizes at room temperature. ¹ H-NMR (CDCI ₃ , 300 MHz): δ 1 .26 (m, 10 H); 1.34 (m, 2 H); 1.55 (m, 2 H); 2.01 (t, 2 H); 2.16 (t, 2 H); 2.69 (t, 2 H); 3.46 (dd, 2 H); 4.95 (ddd, 2 H); 5.84 (ddd, 1 H); 6.01 (NH); 6.82 (d, 2 H); 7.00 (d; 2 H); 8.20 (OH). ³ C-NMR (CDCI ₃ , 75 MHz): δ 21 .0; 29.0; 29.1 , 29.2; 29.3; 33.1 ; 34.7; 36.7; 41.9; 1 14.2; 1 15.7; 121 .6; 129.5; 129.7; 139.1 ; 155.7; 174.9.

Preparation of compound 35

36.4 g of compound 34 is dissolved in 150 ml THF at room temperature under argon, and treated with two portions of a suspension of 8.6 g lithium aluminium hydride in 300 ml THF at 60 °C for 24 h. The reaction mixture is cooled to 0 °C and quenched with 1 N sodium hydroxide. Dilution with ethyl acetate and successive extraction with brine and water gives an organic phase, which is dried over sodium sulfate, filtered and evaporated. The resulting residue is purified by and silica gel chromatography (eluent: dichloromethane/methanol : 20/1 ) to yield 18.1 g compound 35. H-NMR (CDCI ₃ , 300 MHz): δ 1 .26 (m, 10 H); 1.38 (m, 2 H); 1 .51 (m, 2 H); 2.06 (dd, 2 H); 2.66 (t, 2 H); 2.77 (t, 2 H); 2.90 (t, 2 H); 4.99 (ddd, 2 H); 5.34 (OH, NH); 5.83 (ddd, 1 H); 6.75 (d, 2 H); 7.02 (d; 2 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 27.3; 28.9; 29.1 , 29.2; 29.4; 29.5; 33.6; 34.5; 49.4; 50.1 ; 50.5; 1 14.1 ; 1 16.0; 129.7; 129.8; 139.2; 155.9.

Preparation of compound 36

5.3 g of compound 35 and 7.0 g of compound 19 are dissolved in 100 ml dimethyl formamide and treated with 1 1 .9 g of cesium carbonate at 85 °C for 30 h. After cooling to room temperature the reaction mixture is diluted with ethyl acetate and washed with water and brine to give crude compound 38 which is purified by silica gel chromatography (eluent: dichloromethane/methanol : 20/1 ) to yield 7.8 g of compound 36. H-NMR (CDCI ₃ , 300 MHz): δ 1 .29 (m, 12 H); 1.55 (m, 2 H); 2.05 (dt, 2 H); 2.70 (t, 2 H); 2.95 (m, 4 H); 4.95 (ddd, 2 H); 5.83 (ddd, 1 H); 6.37 (s, 1 H); 7.08 (d, 2 H); 7.31 (d; 2 H); 7.75 (m, 2 H); 8.32 (m, 2 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 27.3; 28.9; 29.1 , 29.2; 29.4; 29.5; 29.6; 33.8; 35.4; 43.7; 50.9; 108.6; 106.6; 1 14.1 ; 121.1 ; 126.3; 126.4; 130.6; 132.8; 133.3; 133.4; 134.9; 137.9; 159.1 ; 159.2; 151 .9; 155.3; 156.3; 158.8; 185.6.

Preparation of compound 5A8

A mixture of 5.9 g of compound 36, 1.55 g of potassium carbonate and 0.1 g of potassium iodide are dissolved in 70 ml dioxane and warmed to 45 °C under vigorous stirring. To this mix- ture are added 1.9 g of benzyl bromide and the reaction mixture is stirred for 24 h. After cooling to room temperature the mixture is diluted with dichloromethane and extracted with water. Evaporation of the organic solvent gives crude compound 5A8 which is purified by silica gel chromatography (eluent: dichloromethane/methanol : 10 /1 ) to yield 4.2 g of pure compound 5A8. H-NMR (CDCI ₃ , 300 MHz): δ 1.32 (m, 10 H); 1 .43 (m, 2 H); 1.55 (m, 2 H); 2.08 (dt, 2 H); 2.56 (t, 2 H); 2.76 (t, 2 H); 2.82 (t, 2 H); 3.69 (s, 2 H); 4.99 (ddd, 2 H); 5.87 (ddd, 1 H); 6.33 (s, 1 H); 7.07 (d, 2 H); 7.24 (d; 2 H); 7.28 (m, 1 H); 7.36 (m. 4 H); 7.70 (m, 2 H); 8.27 (m, 2 H). ³ C- NMR (CDCIs, 75 MHz): δ 27.2; 27.5; 29.0; 29.2, 29.6; 29.7; 29.8; 33.1 ; 33.9; 53.9; 55.6; 56.7; 108.4; 106.5; 109.2; 1 14.2; 120.8; 126.2; 126.8; 126.9; 128.2; 128.8; 130.7; 132.7; 133.3; 133.4; 134.8; 138.1 ; 139.2; 139.9; 151 .5; 155.4; 159.4; 182.9; 185.1.

Example 10

Preparation of yellow compound 2A1

(4A1 ) (5A1 )

(2A1 )

A solution of 2.0 g of compound 4A1 and 7.47 g of compound 5A1 , prepared as described in example 5, are dissolved in 50 ml toluene under an argon atmosphere and treated with 0.6 ml of a solution of hexachloroplatinic acid in iso-propanol (10% (w/v)) at 80 °C until a ²⁹ Si-NMR confirms the consumption of all Si-H moieties (ca. 24 h). The mixture is then cooled down and dropped into diethyl ether to precipitate the product. The resulting solid is taken up in dichloromethane and precipitated a second time with diethyl ether. This procedure is repeated a third time to yield 6.1 g of yellow compound 2A1. ¹ H-NMR (CDCI ₃ , 300 MHz): δ 0.15 (s, 6 H); 0.61 (t, 2 H); 1 .62 (quint, 2 H); 2.48 (m, 4 H); 2.94 (t, 2 H); 2.72 (m, 4 H); 7.21 (d, 1 H); 7.25 (d, 2 H); 7.42 (d, 2 H); 7.78 (m, 2 H); 8.67 (d, 2 H); 9.76 (NH). ²⁹ Si-NMR (CDCI ₃ , 80 MHz): δ -109; + 13.

Example 1 1

Preparation of magenta compound 2A2

(4A1 ) (5A3)

(2A2)

Magenta compound 2A2 is prepared in analogy to compound 2A1 in example 10. 1 .0 g of compound 5A3, prepared as described in example 7, and 289 mg of compound 4A1 are reacted to yield 975 mg of compound 2A2. H-NMR (CDCI ₃ , 300 MHz): δ 0.20 (s, 6 H); 0.66 (dd, 2 H); 1.67 (quint. 2 H); 2.93 (s, 3 H); 3.30 (t, 2 H); 6.31 (s, 1 H); 6.67 (d, 2 H); 6.95 (d, 2 H); 7.66 (m, 2 H); 8.22 (dd, 2 H). ²⁹ Si-NMR (CDCI ₃ , 80 MHz): δ -1 10; +14.

(2A3)

Magenta compound 2A3 is prepared in analogy to compound 2A1 in example 10. 5.2 g of compound 5A4, prepared as described in example 8, and 1.2 g of compound 4A1 are reacted to yield 4.4 g of magenta compound 2A3. ¹ H-NMR (CDCI ₃ , 300 MHz): all signals broad δ 0.21 (48 H); 0.65 (16 H); 1 .61 (16 H); 2.59 (16 H); 2.88 (32 H); 3.69 (16 H); 6.23 (8 H); 7.03 (16 H); 7.19 (16 H); 7.34 (40 H); 7.68 (16 H); 8.22 (16 H). ³ C-NMR (CDCI3, 75 MHz): δ 0.31 ; 15.20; 20.52; 33.00; 55.53; 57.26; 58.55; 108.32; 108.42; 109.18; 120.87; 126.13; 126.67; 126.96; 128.26; 128.85; 129.31 ; 129.76; 130.61 ; 132.70; 133.19; 133.47; 134.778; 133.97; 151.59; 155.35; 159.34; 182.78; 185.09. ²⁹ Si-NMR (CDC , 80 MHz): δ -1 10; +14.

Example 13

Preparation of magenta compound 2A4

(2A4)

Magenta compound 2A4 is prepared in analogy to compound 2A1 in example 10. 5.0 g of compound 5A5, prepared as described in example 9, and 1.5 g of compound 4A1 are reacted to yield 4.4 g of magenta compound 2A4. ¹ H-NMR (CDCb, 300 MHz): all signals broad δ 0.22 (48 H); 0.65 (16); 1 .60 (16 H); 2.36 (24 H); 2.37 (16 H); 2.55 (16 H); 2.85 (16 H); 6.30 (8 H); 7.06 (16 H); 7.27 (46 H); 7.70 (16 H); 8.36 (16 ). ²⁹ Si-NMR (CDCb, 80 MHz): δ -1 10; +14. Example 13a

Preparation of cyan compound 2A5

(2A5)

A mixture of 20 mg of compound 4A1 and 101 mg of compound 5A7, prepared as described in example 9b, are dissolved in 5 ml of toluene in argon atmosphere. After addition of 10 mg of Pt02 the mixture is heated to 80 °C for 72 h. After cooling down to room temperature the mixture is diluted with diethyl ether and the resulting precipitate is filtered off, washed with dichloromethane and centrifuged at 4000 rpm. The resulting solid is washed with

dichloromethane and again centrifuged at 4000 rpm. Traces of catalyst are removed by dissolving the precipitate in hot dioxane, followed by repeated centrifugation. The combined dioxane supernatents are distilled off to give 72 mg of compound 2A5. ¹ H-NMR (CDC , 300 MHz): all signals broad δ 0.20 (48 H); 0.59 (16 H); 0.99 (24 H); 1.29 (1 12 H); 1 .51 (32 H); 1.60 (16 H); 1.59 (24 H); 2.02 (16 H); 2.50 (32 H); 3.69 (16 H); 7.39 (8 H); 7.51 (24 H); 7.78 (16 H); 8.26 (16 H). ²⁹ Si-NMR (CDCb, 80 MHz): δ -1 10; +14.

Example 13b

Preparation of yellow compound 2A6

Yellow compound 2A6 is prepared in analogy to compound 2A1 in example 10. 288 mg of compound 5A8, which is commercially available, and 100 mg of compound 4A1 are reacted to yield crude compound 2A6, which is purified by repeated precipitation and washing with diethyl ether to yield 348 mg compound 2A6. ¹ H-NMR (CDCI ₃ , 300 MHz): all signals broad δ 0.17 (48 H); 0.64 (16 H); 1 .64 (16 H); 2.95 (16 H); 5.49 (8 NH); 7.21 (8 H); 7.32 (24 H); 7.46 (16 H); 7.80 (8 H); 8.69 (8 H); 9.78 ( NH). ³ C-NMR (CDCI ₃ , 75 MHz): δ 0.4; 14.7; 23.3; 1 16.7; 125.2 (2 C); 126.9; 127.0; 128.1 ; 130.0 (2 C); 131.5; 133.4; 137.3; 145.7. ²⁹ Si-NMR (CDCI ₃ , 80 MHz): δ -1 10; +14.

Example 13c

Preparation of magenta compound 2A7

+ compound 5A8

2A7

_R 500 j _s

530 mg of compound 5A8, prepared as described in example 9c, are dissolved in 8 ml of dichloromethane and treated with a mixture of 90 mg of Karstedt-catalyst and 30 μΙ diethyl sulfide solution (0.01 mol diethyl sulfide/10 ml dichloromethane). Then, the reaction mixture is warmed to 40 °C under argon. 100 mg of compound 4A1 are added and the reaction mixture is stirred for 24 h until disappearance of compound 5A8 according to 1 H-NMR. Dilution of the reaction mixture with 130 ml hexane gives a precipitate which is filtered off and taken up in 30 ml dichloromethane. The hexane precipitation is repeated two more times to yield 380 mg of com- pound 2A7. ¹ H-NMR (CDC , 300 MHz): all signals broad δ 0.19 (6 H); 0.63 (2 H); 1 .29 (16 H); 1.56 (2 H); 2.57 (s, 3 H); 2.79 (4 H); 3.70 (2 H); 6.33 (1 H); 7.04 (2 H); 7.13 (2 H); 7.30 (4 H); 7.72 (2 H); 8.28 (2 H). ²⁹ Si-NMR (CDCb, 80 MHz): δ -1 10; +14. Example 14

Preparation of yellow compound 1A1

A solution of 60 mg of compound 2A1 , prepared as described in example 10, and 29 mg of compound 3AX1 , prepared as described in example 1 , are dissolved in 0.5 ml dioxane and heated to 90 °C until a ¹ H-NMR shows disappearance of the methoxide signal to give yellow compound 1A1 quantitatively which carries two charges per cage structure. ¹ H-NMR (dioxane, 300 MHz): δ 0.17 (s, ca. 144); 0.20 (s, 48 H); 0.66 (m, 24 H); 0.91 (t, 6 H); 1.34 (m, 8 H); 1.53 (m, 20 H); 1 .88 (broad m, 4 H); 2.43 (broad, 36 H); 2.96 (m, 16 H); 3.49 (m, 16 H); 3.62 (m, 38); 6.74 (broad, 8NH); 7.22 (d, 8 H); 7.30 (d, 16 H); 7.47 (m, 16 H); 7.73 (d, 8 H); 8.59 (broad 8H); 9.74 (broad 8 NH). Example 15

Preparation of yellow compound 1A2

Heating 60 mg of compound 2A1 , prepared as described in example 10, with 8 mol equivalents of compound 3AX1 , prepared as described in example 1 , in dioxane results in yellow compound 1A2 with 4 charges per cage as indicated by 1 H-NMR analysis. ¹ H-NMR (CDCI ₃ , 300 MHz): 0.20 (m, Si-CH3); 0.6 (m, Si-CH ₂ ); 0.90 (t, CH ₃ ); 1.2 - 1 .7 (broad, C-CH ₂ -C); 1.8 - 2.0 (broad CH ₂ ); 2.7 - 3.0 (CH ₂ -N, -CH ₂ -S); 3.5 (broad, NCH ₃ ); 3.6 - 3.7 (braod -CH ₂ -0); 3.8 - 4.1 (broad, CH ₂ N); 7.1 - 7.2 (phenyl-H); 7.5 - 7. 6 (phenyl-H); 7.8 - 8.0 (phenyl. H); 8.5 - 8. 7 (phenyl-H); 9.7 - 9. 8 (NH). Example 16

Preparation of magenta compound 1A3

A solution of 50 mg of magenta compound 2A2, prepared as described in example 1 1 , and 26 mg of 3AX1 , prepared as described in example 1 , are dissolved in 0.5 ml dioxane and heated to 90 °C until a ¹ H-NMR shows disappearance of the methoxide signal to give magenta compound 1A3 quantitatively which carries two charges per cage structure. ¹ H-NMR (dioxane, 300 MHz): all signals broad δ 0.17 (s, ca. 78); 0.20 (s, 48 H); 0.66 (m, 32 H); 0.91 (t, 12 H); 1.35 (m, 16 H); 1 .53 (quint. 8 H); 1.69 (quint. 16 H); 1 .92 (quint. 8 H); 2.96 (broad, 36 H); 3.1 1 (d, 8 H); 3.30 (m, 16 H); 6.29 (s, 8 H); 6.66 (d, 16 H); 6.95 (d, 16 H); 7.66 (m, 16 H); 8.20 (dd, 16 H). Example 17

Preparation of magenta compound 1A4

A solution of 50 mg of magenta compound 2A3, prepared as described in example 12, and 84 mg of 3AX1 , prepared as described in example 1 , are dissolved in 0.5 ml dioxane and heated to 90 °C until a ¹ H-NMR shows disappearance of the methoxide signal to give magenta compound 1A4 quantitatively which carries four charges per cage structure. ¹ H-NMR (dioxane, 300 MHz): all signals broad δ 0.24 (ca. 360 H); 0.62 (32 H); 0.92 (12 H); 1 .29 (16 H); 1.54 (24 H); 1.92 (8 H); 2.55 (16 H); 2.73 (44 H); 3.14 (8 H); 3.62 (16 H); 6.29 (8 H); 7.28 (56 H); 7.58 (16 H); 8.23 (16 H). Example 18

Preparation of magenta compound 1A5

A solution of 60 mg of magenta compound 2A3, prepared as described in example 12, and 12 mg of 3AX1 , prepared as described in example 1 , are dissolved in 0.5 ml dioxane-and heated to 90 °C until a ¹ H-NMR shows disappearance of the methoxide signal to give magenta compound 1A5 quantitatively which carries one charge per cage structure. ¹ H-NMR (dioxane, 300 MHz): all signal broad δ 0.24 (ca. 130 H); 0.62 (20 H); 0.94 (3 H); 1 .30 (4 H); 1 .57 (18 H); 1.85 (2 H); 2.62 (16 H); 2.76 (35 H); 3.14 (2 H); 3.62 (16 H); 6.32 (8 H); 7.28 (56 H); 7.61 (16 H); 8.28 (16 H). Example 19

Preparation of magenta compound 1A6

A solution of 50 mg of magenta compound 2A4, prepared as described in example 12, and 25 mg of 3AX1 , prepared as described example 1 , are dissolved in 0.5 ml dioxane and heated to 90 °C until a ¹ H-NMR shows disappearance of the methoxide signal to give magenta compound 1A6 quantitatively which carries two charges per cage structure. ¹ H-NMR (CDC , 300 MHz): all signal broad δ 0.17 (ca. 204 H); 0.69 (24 H); 0.89 (6 H); 1 .32 (12 H); 1.59 (8 H); 1.82 (8 H); 2.25 (30 H); 2.76 (12 H); 2.83 (16 H); 3.50 (24 H); 6.29 (8 H); 7.06 (16 H); 7.29 (16 H); 7.68 (16 H); 8.31 (16 H). Example 20

Preparation of magenta compound 1A7

A solution of 50 mg of magenta compound 2A4, prepared as described in example 13, and 97 mg of compound 3AX1 , prepared as described in example 1 , are dissolved in 0.5 ml dioxane and heated to 90 °C until a ¹ H-NMR shows disappearance of the methoxide signal to give magenta compound 1A7 quantitatively which carries four charges per cage structure. ¹ H-NMR (CDCIs, 300 MHz): all signal broad δ 0.17 (ca. 360 H); 0.69 (32 H); 0.89 (12H); 1 .32 (12 H); 1.59 (8 H); 1 .82 (8 H); 2.25 (36 H); 2.76 (12 H); 2.83 (16 H); 3.50 (32 ); 6.29 (8 H); 7.06 (16 H); 7.29 (16 H); 7.68 (16 H); 8.31 (16 H). Example 21

Preparation of magenta compound 1A8

A solution of 60 mg of magenta compound 2A4, prepared as described in example 13, and 97 mg of 3AX3, prepared as described in example 3, are dissolved in 0.5 ml dioxane and heated to 90 °C until a ¹ H-NMR shows disappearance of the methoxide signal to give magenta compound 1A8 quantitatively which carries two charges per cage structure. ¹ H-NMR (CDC , 300 MHz): all signal broad δ 0.19 (ca. 204 H); 0.65 (24 H); 0.88 (6 H); 1 .36 (12 H); 1.50 (8 H); 1.82 (8 H); 2.35 (28 H); 2.70 (12 H); 2.83 (28 H); 3.30 (12 H); 6.29 (8 H); 7.08 (16 H); 7.23 (16 H); 7.45 (10); 7.71 (16 H); 8.24 (16 H). Example 22

Preparation of magenta compound 1A9

A solution of 60 mg of compound 2A3, prepared as described in example 12, and 27 mg of compound 3AX3, prepared as described in example 3, are dissolved in 0.5 ml dioxane and heated to 90 °C until a ¹ H-NMR shows disappearance of the methoxide signal to give magenta compound 1A9 quantitatively which carries two charges per cage structure. ¹ H-NMR (CDC , 300 MHz): all signal broad δ 0.19 (ca. 204 H); 0.65 (24 H); 0.88 (6 H); 1 .36 (12 H); 1.60 (16 H); 1.92 (4 H); 2.75 (52 H); 3.65 (20 H); 6.29 (8 H); 7.08 (16 H); 7.30 (66 H); 7.72 (16 H); 8.24 (16 H). Example 22a

Preparation of magenta compound 1A10

A solution of 156 mg of magenta compound 2A3, prepared as described in example 12, and 64 mg of 3AX1 , prepared as described in example 1 , are dissolved in 0.5 ml chloroform and are heated to 65 °C for 48 h until a ¹ H-NMR shows disappearance of the methoxide signal to give magenta compound 1A10 quantitatively which carries two charges per cage structure. ¹ H-NMR (CDCIs, 300 MHz): all signal broad δ 0.24 (ca. 68 H); 0.61 (24 H); 0.94 (6 H); 1.35 (8 H); 1.67 (20 H); 1.92 (4 H); 2.58 (12 H); 2.78 (38 H); 3.34 (4 H); 3.69 (20 H); 6.32 (8 H); 7.02 (16 H); 7.31 (56 H); 7.61 (16 H); 8.28 (16 H). Example 22b

Preparation of magenta compound 1A1 1

compound 2A7 compound 3AX1

wherein

and R ⁵⁰¹ is

71 mg of magenta compound 2A7, prepared as described in example 13c, are dissolved in 1 ml chloroform containing 103 mg of compound 3AX1 in a tube. The tightly capped tube is heated to 60 °C until the methyl sulfonate signal of the chain does not diminish any more in the ¹ H-NMR to give a solution of compound 1A1 1 . ¹ H-NMR (CDCI ₃ , 300 MHz): all signals broad δ 0.95 (t, 3 H); 3.95 (remnant sulfonate 1.5 H ca. 50 %); 4.90 (1 H); 6.33 (1 H); 7.04 (2 H); 7.13 (2 H); 7.30 (4 H); 7.72 (2 H); 8.28 (2 H).

Application Example 1

4 mg of compound 1A8, prepared as described in example 21 , are dissolved in a mixture of 24.9 microliter of silicon oil (1.5 cStokes, Gelest) and 0.1 microliter tetrachloroethylene (Fluka). The magenta solution is placed between a comb electrode (CSEM) beyond transparent glass covers which are connected to a voltage of 40 V. Movement of a magenta particle front is observed at that voltage and a frequency of 5 Hz.

Application example 2

40 mg of compound 1A4, prepared as described in example 17, are dissolved in 360 microliter - dodecane (Fluka). The mixture is placed between a comb electrode (CSEM) beyond

transparent glass covers which are connected to voltage of 40 V. Movement of the magenta particle front is observed at that voltage and a frequency of 5 Hz. A rapid pusation of the particles is obtained at frequence of 15 Hz. Example 23

Preparation of compound 3BX1

(3BX1)

Preparation of compound 7B1

A suspension of 106.0 g sodium carbonate in 28.5 g of allylamine and 270 ml of butyl bromide are stirred at 90°C for 5 h. The mixture is cooled to room temperature, diluted with

dichloromethane, filtered and successively extracted with 0.5 N hydrochloric acid, saturated hydrogen sodiumcarbonate solution and brine. Evaporation of the organic solvent leaves an oil which is distilled at 45 °C and 0.5 mbar to give 44.2 g of compound 7B1. ¹ H-NMR (CDCI ₃ , 300 MHz): δ 0.93 (t, 6 H); 1 .28 (quint. 4 H); 1.42 (quint. 4 H); 2.43 (t, 4 H); 3.09 (t, 2 H); 5.10 (d, 1 H); 5.19 (d, 1 H); 5.87 (ddt, 1 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 14.02; 20.68; 29.13; 53.48; 57.29; 1 16.75; 136.17.

Preparation of compound 3BX1

Compound 3BX1 is prepared in analogy to compound 3AX1 in example 1. 39.6 g of compound 3BX1 are obtained from 50.0 g of polydimethylsiloxane 6B1 (supplier ABCR) and 10.8 g of compound 7B1 . H-NMR (CDCI ₃ , 300 MHz): δ 0.94 (t, 6 H); 1.39 (m, 22 H); 1 .95 (dt, 2 H); 2.33 (dt, 6 H); 4.89 (dd, 2 H); 7.73 (ddt, 1 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 13. 09; 19.78; 25.95; 26.63; 27.93; 28.13; 28.45; 28.59; 32.81 ; 52.90; 53.21 ; 1 13.07; 138.2.

Preparation of compound 13

A mixture of 26.5 ml of 10-undecenoyl chloride and 31.4 ml dibutyl amine are cautiously dissolved in 100 ml toluene and then heated to 80 °C for 24 h. Usual work-up gives an oily residue which is purified by column chromatography over silica gel (eluent: hexane - ethyl acetate (10 - 3)) to yield 30.8 g of compound 13.

Preparation of compound 7B2

5.0 g of compound 13 is added to a mixture of 0.7 g of lithium aluminiumhydride in 30 ml of tetrahydrofurane in an argon atmosphere and refluxed until consumption of the starting material. After cooling down to room temperature, excess hydride is cautiously destroyed with 15% sodium hydroxide and compound 7B2 extracted with hexane. Evaporation of the solvent gives 4.5 g of compound 7B2. ¹ H-NMR (CDC , 300 MHz): δ 0.94 (t, 6 H); 1.39 (m, 22 H); 1.95 (dt, 2 H); 2.33 (dt, 6 H); 4.89 (dd, 2 H); 7.73 (ddt, 1 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 13. 09; 19.78; 25.95; 26.63; 27.93; 28.13; 28.45; 28.59; 32.81 ; 52.90; 53.21 ; 1 13.07; 138.2.

Example 23b

Preparation of 7B3

Preparation of compound 14

Compound 14 is prepared in analogy to compound 13 in example 8. 26.3 g of compound 14 are obtained from 33.4 ml of 10-undecenoyl chloride and 30.0 ml N-benzyl-N-methyl amine.

Preparation of compound 7B3

Compound 7B3 is prepared in analogy to compound 7B2 in example 8. Reduction of 13.2 g of compound 14 yields 1 1.2 g of compound 7B3. ¹ H-NMR (CDCI ₃ , 300 MHz): δ 1 .32 (m, 10 H); 1.40 (quint, 2 H); 1 .55 (quint. 2 H); 2.07 (dt, 2 H); 2.22 (s, 3 H); 2.39 (t, 2 H); 3.51 (s, 2 H); 4.99 (dd, 2 H); 5.85 (ddt, 1 H); 7.34 (s, 5 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 27.47; 28.97; 29.16; 29.49; 29.60; 33.84; 42.29; 57.65; 62.38; 1 14.12; 126.82; 128.15; 129.05; 139.23.

Example 24

Preparation of compound 3BY1

Preparation of compound 12a

Compound 12a is prepared as described in example 4. Prepara tion of compound 3BY1

A mixture of 0.2 g of compound 12a and 4.1 ml N-benzyl, N-methylamine is stirred together in 0.5 ml of dioxane to give 0.2 g compound 3BY1 after neutralization with the appropriate amount of sodium hydroxide and filtration and evaporation of solvent. ¹ H-NMR (dioxane, 300 MHz): δ 2.48 (s, 3 H); 3.38 (s, 3 H); 3.61 (m, ca. 45 H); 3.95 (s, 2 H); 7.35 (m, 5 H).

Example 25

Preparation of yellow compound 5B1

(17)

(5B1 )

Preparation of compound 17

A solution of 30 ml of water containing 7.3 g of sodium carbonate, 10.0 g 4-chloro-3-nitro- benzene-allylsulfonamide and 5.9 g of sulfanilic acid is stirred at 100 °C for 48 h. Evaporation of water leaves a solid which is further pruified by column chromatography (eluent:

dichloromethane - methanol (10 - 2)) to give 3.4 g of compound 17. ¹ H-NMR (CD ₃ OD, 300 MHz): δ 3.49 (d, 2 H); 5.05 (dd, 2 H); 5.62 (ddt, 1 H); 7.37 (d, 1 H); 7.40 (d, 2 H); 7.55 (d, 1 H); 7.80 (d, 2 H); 8.55 (d, 1 H). ³ C-NMR (CD ₃ OD, 75 MHz): δ 45.18; 1 15.99; 1 16.90; 124.02; 126.13; 127.38; 129.46; 132.40; 132.91 ; 133.57; 139.90; 142.67; 144.53. Preparation of yellow compound 5B 1

A mixture of 50 mg of compound 17 and 400 μΙ dimethylsulfate are heated to 120 °C for 2 h.

The mixture is directly applied to a silica gel column and eluted with dichloromethane - methanol (10 - 1 ) to give 40 mg of compound 5B1. ¹ H-NMR (CDCI ₃ , 300 MHz): δ 3.66 (t, 2 H);

3.80 (s, 3 H); 5.19 (ddd, 2 H); 5.76 (ddt, 1 H); 7.49 (d, 3 H); 7.90 (d, 1 H); 7.97 (d 2 H); 8.73 (d, 1 H); 9.85 (NH).

Example 26

Preparation of magenta compound 5B2

5.10 g of allylic compound 5A2, prepared as described in example 6, and vinylsulfonyl flouride are dissolved in 6 ml of dry dimethyl formamide and heated to 60 °C until TLC shows complete consumption of the starting materials (ca. 16 h). After cooling to room temperature the mixture is diluted with ethyl acetate and extracted with water. Evaporation of the solvent leaves a residue which is purified over silica gel (eluent: dichloremethane - hexane (10 - 2)) to give 5.05 g of the intermediate compound 24. 4.00g of the intermediate compound 24 are dissolved in 70 ml dichloromethane and 7 ml methanol containing 1 equivalent of sodium methanolate and are stirred at room temparature for 4 h. The mixture is extracted with ice-water and the organic solvent evaporated. The residue is purified over silica gel (eluent: dichloremethane - methanol (10 - 1 )) to give 3.35 g of magenta compound 5B2. ¹ H-NMR (CDCI ₃ , 300 MHz): δ 3.43 (t, 2 H); 3.93 (t, 2 H); 3.96 (s, 3 H); 4.02 (d, 2 H); 5.26 (ddd, 2 H); 5.90 (dt, 1 H); 6.42 (s, 1 H); 6.80 (d, 2 H); 7.06 (d, 2 H); 7.79 (quint. 2 H); 8.37 (dd, 2 H). ³ C-NMR (CDCI ₃ , 75 MHz): δ 45.39; 46.63; 53.95; 55.23; 107.96; 108.36; 109.21 ; 1 13.75; 1 17.29; 122.33; 126.29; 126.80; 132.84; 133.03; 133.40; 133.59; 134.98; 139.07; 144.51 ; 145.12; 156.24; 159.68; 183.18; 185.30.

Example 26a

Preparation of compound 33

(33)

Preparation of compound 31

A mixture of 19.0 g of 3-nitroaniline, 18.0 g of potassium carbonate and 10.3 ml of allylbromide are heated to 90 °C for 30 h in 170 ml of toluene. After cooling down the mixture is filtered and the toluene evaporated. The residue is filtered over silicagel (eluent: hexane - ethyl acetate: 10 - 1 ) to give 7.9 g of compound 31 . H-NMR (CDCI ₃ , 300 MHz): 3.85 (s, 2 H); 4.25 (NH); 5.31 (ddd, 2 H); 5.94 (ddd, 1 H); 6.39 (dd, 1 H); 7.30 (dd, 1 H); 7.41 (dd, 1 H); 7.54 (dd, 1 H);

3C-NMR (CDCIs, 75 MHz): 46.1 ; 106.5 ; 1 12.0; 1 16.3; 1 18.9; 129.7; 134.1 ; 148.7; 149.4.

Preparation of compound 32

In analogy to the preparation of compound 26 in example 9a, 7.8 g of nitrocompound 31 are dissolved in 80 ml of dioxane containing 23 ml of cone, hydrogenchloride and 8.3 g of tin granules. Pure compound 32, 5.2 g, is obtained after distillation at 175 °C /0.12 mbar at a Kugelrohr. H-NMR (CDCIs, 300 MHz): 3.62 (2 x NH); 3.84 (s, 2 H); 5.34 (ddd, 2 H); 5.98 (s, 1 H); 6.04 (ddd, 1 H); 6.15 (dd, 2 H); 7.07 (dd, 1 H); ³ C-NMR (CDCIs, 75 MHz): 46.6 ; 99.9;

104.1 ; 105.1 ; 1 16.1 ; 130.1 ; 135.8; 147.7; 149.4.

Preparation of compound 33

A mixture of 0.50g of compound 28, obtained according to FR1410259, and 0.27 g of compound 32 are heated to reflux in 10 ml of n— propanol for 24 h. After colloing down in an ice-bath the mixture is filtered and the residue washed successively with propanol and methanol to yield 0.41 g of the cyan compound 33. H-NMR (DMSO-D ₆ , 300 MHz): 3.72 (d, 2 H); 5.13 (d, 1 H); 5.33 (dd, 1 H); 5.94 (ddd, 1 H); 6.58 (dd, 1 H); 6.64 (s, 1 H); 6.68 (d, 1 H); 7.22 (t, 1 H); 7.80 (dd, 2 H); 8.19 (dd, 2 H).

Example 27

Preparation of magenta compound 2B1

(2B1)

Magenta compound 2B1 is prepared in analogy to compound 2A1 in example 10. 3.0 g of compound 5B2, prepared as described in example 26, and 0.67 g of compound 4B1 are reacted to yield 1.60 g of magenta compound 2B1. ¹ H-NMR (CDCI ₃ , 300 MHz): all signal broad δ 0.21 (48 H); 0.65 (16 H); 1 .66 (16 H); 3.31 (16 H); 3.37 (16 H); 3.86 (16 H); 3.92 (24 H); 6.28 (8 H); 6.68 (16 H); 7.00 (16 H); 7.70 (16 H); 8.23 (16 H). ³ C-NMR (CDCI3, 75 MHz): δ -0.26; 14.77; 20.83; 45.41 ; 46.26; 54.63; 55.44; 107.70; 108.23; 109.06; 1 13.30; 122.41 ; 126.15; 126.60; 132.72; 133.25; 133.48; 134.84; 138.99; 144.10; 144.83; 156.20; 159.55; 182.90; 185.07. ²⁹ Si- NMR (CDCI3, 80 MHz): δ -1 10, +14.

Example 27a

Preparation of yellow compound

(2B2) In an argon atmosphere 0.100 ml of a xylene solution (2 % in platinum, Fluka) and 0.035 ml of diethylsulfide are stirred in 3 ml dichloromethane at room temperature for 30 min. A solution of 0.370 g of compound 5B1 , prepared as described in example 25, in 10 ml dichloromethane and 0.100 g of compound 4B1 are added successively and stirring is continued at 40 °C for 3 d. The mixture is evaporated and the residue extracted with diethyl ether until the supernatant is colorless. Compound 2B2, 0.188 g, is obtained as a yellow solid. ¹ H-NMR (CDCI ₃ , 300 MHz): all signal broad δ 0.24 (ca. 48 H); 0.60 (16 H); 1.59 (16 H); 2.90 (16 H); 3.83 (24 H); 7.50 (dd, 24 H); 8.01 (24 H); 8.82 (8 H).

Example 28

Preparation of compound magenta 1 B1

A solution of 50.0 mg of compound 2B1 , prepared as described in example 27, and 26.0 mg of compound 3BX1 , prepared as described in example 23, are heated to 65 °C in 0.5 ml chloro- form to form 76 mg of magenta compound 1 B1 after 24 h. According ¹ H-NMR data compound 3BX1 has been completely alkylated resulting in magenta compound 1 B1 with two negative charges. H-NMR (CDCI ₃ , 300 MHz): all signal broad δ 0.21 (44 H); 0.64 (24 H); 0.90 (t, 6 H); 0.98 (t, 12 H); 1.41 (20 H); 1 .64 (24 H); 3.01 (18 H); 3.46 (32 H); 3.85 (32 H); 6.38 (8 H); 6.69 (16 H); 6.97 (16 H); 7.67 (16 H); 8.21 (16 H).

Example 29

Preparation of magenta compound 1 B2

A solution of 50.0 mg of compound 2B1 , prepared as described in example 27, and 105.0 mg of compound 3BX1 , prepared as described in example 23, are heated to 65 °C in 0.5 ml chloroform to form 155 mg of compound 1 B2 after 24 h. According ¹ H-NMR data compound 3BX1 has been completely alkylated resulting in compound 1 B2 with eight negative charges. ¹ H-NMR (CDCIs, 300 MHz): all signal broad δ 0.21 (252 H); 0.63 (48 H); 0.96 (72 H); 1 .36 (80 H); 1.64 (48 H); 2.76 (32 H); 3.07 (27 H); 3.28 (16 H); 3.36 (16 H); 3.82 (16 H); 6.38 (8 H); 6.69 (16 H); 6.97 (16 H); 7.67 (16 H); 8.21 (16 H).