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WO/2000/017132A1 |
Olefins containing aromatic substituents are synthesized without the addition of phosphonium salts or phosphanes with the aid of a Pd-II compound as a catalyst in the presence of nitrogen-containing additives such as N,N-dimethylglycine ...
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WO/1999/048869A1 |
The invention relates to new aryl phenyl substituted ketoenols of formula (I), where X is halogen, alkyl, alkoxy, alkenyloxy, alkylthio, alkyl sulfinyl, alkyl sulfonyl, halogen alkyl, halogen alkoxy, halogen alkenyloxy, nitro, cyano or p...
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WO/1999/035111A1 |
A method for the synthesis of TFPX-dichloride is disclosed. The method involves reacting hexachloro-p-xylene with anhydrous HF in an inert organic solvent. The reaction is advantageous in that it produces relatively high yields of TFPX-d...
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WO/1999/021932A1 |
New starting materials and methods are used to make materials with low dielectric constant through the processes of transport polymerization or chemical vapor deposition. The starting materials and precursors are designed to provide poly...
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WO/1999/021936A1 |
A polymer electroluminescent device (1) comprises an electroluminescent layer (7) of a poly(1,4-phenylenevinylene) having aryl-1,4-phenylene units, where the aryl group is a phenyl, naphthyl or biphenylyl group. Using such a poly(1,4-phe...
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WO/1999/006341A1 |
The present invention relates generally to novel methods for the synthesis of cyclopropylacetylene which is an essential reagent in the asymmetric synthesis of (S)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihy
dro-2H-3,1-benzo...
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WO/1998/046547A1 |
A process is disclosed for preparing 2-aryl-substituted indenes by reacting an indene with an arene compound substituted with an halogen atom, preferably a iodine atom, or with an organosulphonate group, said reaction being carried out i...
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WO/1998/040333A1 |
The invention concerns a process for halogenating cyclopropylmethyl ketone with at least one dihalogen triorganophosphorane of the general formula (I): R�3?PHal�2?, in which the R groups can be the same or different and designate a s...
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WO/1998/035924A1 |
Novel liquid-crystalline compounds which can impart desirable properties to liquid-crystal compositions mainly for use in the TFT, STN, and TN display systems, in particular liquid-crystalline compounds having excellent compatibility at ...
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WO/1998/032722A1 |
Electrically and chemically stable liquid crystal compounds having a good compatibility with conventional liquid-crystal compounds even at low temperature while maintaining a high voltage retention and a large $g(D)$g(e) and being repres...
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WO/1998/029373A1 |
$g(v)-Bromoalkylbenzenes reduced having a small content of positional isomer and a process for preparing the same characterized by bringing a bromoalkylbenzene mixture comprising an $g(v)-bromoalkylbenzene and an ($g(v)-1)-bromoalkylbenz...
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WO/1998/028273A1 |
The invention concerns a method for preparing 1-[2-(2-naphthyl)ethyl]-4-(3-trifluoromethylphenyl)-1,2,3,6-
tetrahydropyridin of formula (I) and its pharmaceutically acceptable salts by reacting 2-(2-bromoethyl)naphthalene with 4-(3-trifl...
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WO/1998/024744A1 |
This invention concerns new polyhalogen hexenes of the formula (I): CF�2?X-CFX-CH�2?-CH=CHR-CH�2?X, in which the groups X can be the same or different and any of which can stand for chlorine, bromine or iodine and R for hydrogen, C...
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WO/1998/024743A1 |
A method of making TFPX using an S�N?2 type nucleophilic displacement reaction. The method includes reacting a nucleophilic fluorine molecule with a nonfluorinated-tetrahalo-p-xylene molecule. Exemplary nucleophilic fluorine molecules ...
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WO/1998/014418A1 |
Liqud crystal compounds and liquid crystal compositions which are best suited as a liquid crystal material required to have negative permittivity including an IPS mode. The compounds are represented by general formulae (1) and (1-1), whe...
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WO/1998/013321A1 |
There is herein disclosed a compound represented by general formula (1) wherein R�1? is an alkadienyl group having 4 to 10 carbon atoms in which a hydrogen atom may be substituted by a fluorine atom or the like; R�2? is an alkenyl gr...
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WO/1998/011039A1 |
A process for the chloromethylation of aromatic hydrocarbons with a phase transfer catalyst by blowing hydrogen chloride in the presence of formaldehyde, water, sulfuric acid and an inert organic solvent, which is particularly suitable f...
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WO/1998/008791A1 |
There are herein disclosed a fluorovinyl derivative compound represented by general formula (1) and having characteristics of a liquid crystal, a liquid crystal composition, and a liquid crystal display device formed by using this compos...
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WO/1997/043231A1 |
The invention features a useful method for the synthesis of fluorinated derivatives. It is characterised in that it comprises at least one step in which a substrate comprising one sp3 hybridising halogenophore carbon bearing at least two...
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WO/1997/034589A1 |
The present invention provides a class of chemical compounds useful as efficacious drugs in the treatment of sickle cell disease and diseases characterized by unwanted or abnormal cell proliferation. The active compounds are substituted ...
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WO/1997/034855A1 |
Liquid crystalline compounds expressed by formula (1), liquid crystal compositions thereof obtained by combination with specified liquid crystal compounds, and liquid crystal display devices using them, wherein A1, A2, A3 and A4 denote e...
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WO/1997/032835A1 |
A process for producing benzyl fluoride derivatives represented by general formula (II), wherein R1 represents hydrogen, lower alkyl, etc.; R2 represents hydrogen, piperazinyl, piperidyl, pyrrolidinyl, morpholinyl, amino or heteroaryl; a...
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WO/1997/030958A1 |
In an improved process for the production of halogen methyl cyclopropanes of formula (I) in which Hal is chlorine or bromine and R1 to R5 are mutually independently hydrogen, optionally substituted C1-C10 alkyl or optionally substituted ...
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WO/1997/013821A1 |
There are proposed liquid crystalline compounds expressed by formula (1) having high elastic constant ratio, low viscosity, stability as well as superior compatibility with other liquid crystalline compounds such as those expressed by ge...
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WO/1997/013738A1 |
Liquid crystal compounds each having a wide temperature range of the liquid crystal phase, a low viscosity and a large elastic constant ratio; liquid crystal compositions containing the same; and liquid crystal display devices constructe...
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WO/1997/006124A1 |
Novel liquid-crystal compounds represented by general formula (1) and having a large value of permittivity anisotropy, a high voltage retention at service temperatures, a low threshold voltage, and improved compatibilities with other liq...
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WO/1996/041787A1 |
Liquid crystal compounds being excellent in compatibility with other liquid crystal materials and stability and having a low viscosity and a high isotropic phase transition temperature; a liquid crystal composition containing at least on...
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WO/1996/037451A1 |
A novel liquid crystalline compound having a large elastic constant ratio, excellent compatibility with other liquid crystalline compound(s) particularly at a low temperature, and chemical stability, or a liquid crystalline compound havi...
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WO/1996/015096A1 |
Inhibitors for matrix metalloproteases, pharmaceutical compositions containing them, and a process for using them to treat a variety of physiological conditions. The compounds of the invention have the generalized formula (T)xA-B-D-E-G, ...
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WO/1996/013474A1 |
The method described calls for primary and secondary alcohols to be reacted with perfluorobutane sulphonyl fluoride, or with higher homologues such as perfluorooctane sulphonyl fluoride, in the presence of 2-3 equivalents of strong organ...
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WO/1996/010002A1 |
A process is disclosed for the manufacture of product compounds of the formula HC(R1)2C(R1)2C(R2)2H wherein each R1 is independently selected from the group consisting of H, F, Cl, CN, R, OR, CO2R, C(O)R, OC(O)R, Rf, ORf, CO2Rf, C(O)Rf a...
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WO/1996/003357A1 |
A process for the preparation of a selectively fluorinated organic compound, which process includes reaction of a precursor of said organic compound, the precursor containing at least one Group VI element selected from sulfur, selenium a...
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WO/1996/002482A1 |
The co-formation of diarylalkane by-product in the chloroalkylation of an aromatic compound with an aldehyde is minimized by conducting the reaction in a continuous manner in a concentration with agitation and in the presence of both hyd...
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WO/1996/001253A2 |
Certain compounds have been synthesized and found to be effective inhibitors of phospholipase A2 (PLA2), and thereby useful in the treatment of intestinal cholesterol absorption and the disease states arising therefrom, such as hyperchol...
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WO/1996/000202A1 |
An improvement in a process for the haloalkylation of a first aromatic compound having at least one free ring position with a haloalkylating reagent and in the presence of a haloalkylation catalyst, said process producing a haloalkylated...
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WO/1996/000208A1 |
Compounds have the general formula (I) Z[-Y1-(A-Y2)m-X]n, in which the variables have the following meanings: Z stands for an n-valent aliphatic residue with 2 to 20 C atoms or for an n-valent three to seven-membered saturated or unsatur...
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WO/1995/032261A1 |
Fluoroalkyl ethinyl and difluoroalkyl ethinyl benzenes of formula (I) in which the symbols and indices have the following meanings: R1 is H, a straight chained or branched alkyl group (with or without an asymmetrical C atom) with 1 to 15...
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WO/1995/030723A1 |
Supertwist liquid crystal displays with outstanding properties are obtained when the nematic liquid crystal mixture contains at least one compound of formula (I), where R1, R2, (a), p, r and s are as indicated in claim 1.
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WO/1995/029887A1 |
A pesticidal compound of formula (I) in which R1 is hydrogen and R2 represents a cyclopropyl group or R1 and R2 each represents an alkyl group, which alkyl groups may be the same or different; ArA represents an optionally substituted phe...
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WO/1995/020021A1 |
A novel liquid crystal compound represented by general formula (1), and a liquid crystal composition containing the same and having a high clearing point and a viscosity reducing effect suitable for use as a liquid crystal display elemen...
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WO/1995/017363A1 |
An alkylative cycloaddition method is provided that is particularly useful for the synthesis of many of the Vitamin D analogues with differing side chains. Thus, a preferred synthesis is of Vitamin D analogues having a side chain R1 wher...
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WO/1995/004790A1 |
2-fluorocyclohexene derivatives of the formula (I) in which R, A1, Z1, X, L1, L2, m and n have the meanings given in claim (1) can be used as components of liquid crystalline media for electro-optical display components, especially for m...
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WO/1995/004026A1 |
Compounds of general formula (I) characterised in that R1 and R2 are independently selected from the group consisting of COOR, CN, aryl, substituted aryl, COOH, halogen, C(O)NHR4, C(O)NR5R6; X and Y are independently selected from the gr...
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WO/1995/004109A1 |
Aqueous dispersions which are particularly well suited for use as aqueous ink jet ink compositions having an aqueous carrier medium which comprises water or a mixture of water and at least one organic solvent; a particulate solid, prefer...
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WO/1994/026839A1 |
Partially fluorinated benzene derivatives having formula (I) in which R, A1, A2, Z1, Z2, L1, L2 and m have the meanings given in the first claim are suitable as components of liquid crystal media.
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WO/1994/026687A1 |
Compounds of formula (I) wherein m is 1-4; R1-R4 independdently are hydrogen, lower alkyl of 1 to 6 carbons, Cl, Br, or I; R5 is hydrogen, lower alkyl of 1 to 6 carbons, Cl, Br, I, lower alkoxy or lower thioalkoxy of 1-6 carbons; R6 is h...
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WO/1994/022802A1 |
A protecting group of the formula (I): Ar - L - Y -, where Ar represents a substantially plane, fused ring system containing at least 4 aromatic rings; L represents a linker group containing at least one carbon atom which is capable of b...
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WO/1994/020442A1 |
A fluorinated aromatic compound represented by formula (I), utilizable for preparing a magnetic fluid having a wide heat-resistant temperature range and a high water resistance. In said formula, X represents H, F, Cl, C1-C20 alkyl or C1-...
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WO/1994/012455A1 |
The invention relates to methylene cyclobutane-benzole derivatives of formula (I) in which R1, A1, Z1, L1, L2, m, V, W, Y and n have the meanings given in claim 1, and their use as components of liquid crystal media for electro-optical d...
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WO/1994/008978A1 |
Compounds having the structural formula (I), wherein R can be the same or different and is halogen, hydrogen, C1-C8 alkyl, C1-C8 haloalkyl, C3-C6 cycloalkyl, C7-C9 aralkyl, phenyl, nitro, C1-C6 alkoxy, C1-C6 alkylthio, C1-C6 alkylsulfiny...
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