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WO/2000/023435A1 |
Metal complexes which serve as catalysts in various chemical reactions or as materials in the information-electronics industry, exhibit peroxidase-like activities or high hydrolytic activities for phosphoric diesters, and can easily hybr...
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WO/2000/021922A2 |
(57) Abstract The invention relates to a process for the preparation of a compound of formula (I): wherein, R?1¿ represents C¿1-4 ?alkoxy; fluorine, chlorine or bromine; and R?2¿ represents hydrogen or C¿1-4 ?alkoxy; which process co...
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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/2000/015599A1 |
The present invention relates to producing stereoselective nitro compounds by reacting a dicarbonyl compound with a nitrostyrene compound in the presence of a catalyst complex and a base.
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WO/2000/003971A1 |
A process for selectively eliminating a compound of general formula (II) from a mixture of a compound of general formula (I) with the compound of general formula (II). This process comprises reacting the compound of general formula (II) ...
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WO/2000/001647A2 |
Organic compounds, e.g., fluoro-organic compounds such as fluorocarboxylic acids or carboxylic acid chlorides can contain small quantities of carboxylic acid fluorides, HF or hydrolysable fluoride. Corrosive fluorides or hydrofluoric aci...
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WO/1999/058509A1 |
The invention relates to a method for producing isoxazolene of the formula (I), where the substituents have the following meanings: R?1¿ is hydrogen, C¿1?-C¿6? alkyl, R?2¿ is C¿1?-C¿6? alkyl, R?3¿, R?4¿, R?5¿ are hydrogen, C¿1?...
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WO/1999/052850A1 |
The present invention relates to an oxidation which converts a primary or secondary alcohol of Formula (II) to an acid or ketone of Formula (I) with periodic acid and a catalytic amount of a chromium reagent.
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WO/1999/052849A1 |
The present invention relates to the oxidation of a primary alcohol of Formula (II) to the carboxylic acid of Formula (I): R?1¿CH¿2?OH$m(7)R?1¿CO¿2?H.
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WO/1999/051561A1 |
Process for the preparation of 3-bromoanisole comprising methoxydenitrating 3-bromonitrobenzene in the presence of a phase-transfer catalyst (PTC), and the preparation of 3-bromonitrobenzene by the bromination of nitrobenzene with bromin...
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WO/1999/047474A1 |
This invention relates to a novel, inventive process for the preparation of biphenyls or aromatic olefins by coupling reactions of the Suzuki coupling and Heck coupling type, using allylpalladium catalysts of the $g(m)-halo(triisopropylp...
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WO/1999/042433A1 |
Disclosed is a process for the nitration of aromatic compounds using oxygen activated by an inorganic catalyst and nitrogen dioxide. Since the present invention does not use concentrated nitric acid nor concentrated sulfuric acid used in...
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WO1998039099A9 |
The present invention provides apparatus and methods for the synthesis of combinatorial chemical libraries. The apparatus comprises a plurality of reaction vessels having an inner surface, an outer surface, a first opening, and a second ...
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WO1999020395A9 |
The present system is useful for the synthesis of chemical compounds and can be used for solid state or liquid chemistries. In one embodiment, the system (10) includes a reagent delivery/vent unit (20) and a chemical processing unit (30)...
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WO/1999/035117A1 |
The subject invention involves processes for making 2,4-difluoro-3-Q1-benzoic acid, wherein Q1 is derived from an electrophilic reagent, comprising the steps of: (a) treating 1-bromo-2,4-difluorobenzene with a strong, non-nucleophilic ba...
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WO/1999/022858A1 |
A method of reacting an aromatic compound with an immiscible reacting agent involves the passage of the reactant along a flow path having a width of from 10 to 1000 $g(m)m in such a way that essentially laminar flow of the reactant takes...
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WO/1999/023061A1 |
According to the invention, a quantity of 0.5 to 20,000 ppm of one or more surface active substances from the group of anionic, cationic, zwitterionic or non-ionic is added to the reaction mixture during the conversion of aromatic compou...
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WO/1999/019275A1 |
A process for electrophilic substitution of an aromatic compound, comprising contacting said aromatic compound, a precursor of the desired substituent and an aqueous reagent containing zinc halide, at an elevated temperature.
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WO1998056506A9 |
Systems and methods for synthesizing chemical compounds using a plurality reaction vessels (16). In particular, of holding a plurality of reaction vessels for parallel synthesis of multiple discrete compounds or for combinatorial librari...
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WO/1999/012886A1 |
The invention relates to a method for producing a dinitronaphthalene-isomer mixture by nitration of nitronaphthalene. According to said method, nitronaphthalene is reacted in a solvent of formula (I), wherein X represents nitrogen or sul...
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WO/1999/012919A1 |
Disclosed is a novel process and novel intermediates to prepare [R-(R*,R*) ]-N-[3-[1-[5, 6-dihydro-4-hydroxy -2-oxo-6-(2-phenylethyl) -6-propyl-2H-pyran-3- yl]propyl]phenyl]-5- (trifluoromethyl)-2- pyridinesulfonamide (XIX) which is a pr...
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WO/1999/012887A1 |
The invention relates to a method for producing a dinitronaphthalene-isomer mixture by nitrating nitronaphthalene. The invention is characterized in that nitronaphthalene is optionally reacted in an inert organic solvent with 1 to 20 tim...
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WO/1999/010527A2 |
The invention relates to a method for isolating anionic organic substances from aqueous systems using polymer nanoparticles with cationic pH-sensitive surface groups. Extraction can be carried out directly from diluted solutions, biologi...
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WO/1999/008995A1 |
The invention concerns a method for treating an aqueous solution derived from sluicing of crude mononitrated or dinitrated aromatic compounds obtained by nitration of the corresponding aromatic compounds, consisting in: (a) contacting sa...
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WO/1999/006339A1 |
The invention concerns a method for preparing substituted benzyl bromides of general formula (I), wherein at least one substituent R?1-5¿ represents an electroattractive group, such as fluorine, chlorine, bromine, C¿1?-C¿4? alkoxycarb...
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WO/1999/005087A1 |
A process for the preparation of a compound of general formula (I), wherein R?1¿ is hydrogen or C¿1?-C¿6? alkyl, C¿2?-C¿6? alkenyl or C¿2?-C¿6? alkynyl, any of which may optionally be substituted with one or more substituents sele...
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WO/1999/003802A1 |
The present invention provides a method of substituting a carbonyl compound with fluorine at the $g(a)-position, comprising reacting the carbonyl compound with a fluorinating agent in the present of a metal-containing catalyst. The react...
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WO/1998/055446A1 |
The preparation of aromatic ketones substituted with a thioether group at the ortho position is accomplished by the initial reaction of an aromatic nucleus substituted with a halide and an ortho nitro group with a nitroalkane in the pres...
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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/1998/046557A1 |
The invention relates to aromatic amines which are produced by catalytically hydrogenating corresponding aromatic nitrocompounds in a gaseous phase. Hydrogenation is carried out in the presence of catalysts which contain palladium, vanad...
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WO/1998/042653A1 |
A process for producing carboxylic acid esters by reacting an aldehyde with an alcohol in a liquid phase in the presence of molecular oxygen and a catalyst composed of at least palladium and X (which is bismuth and/or lead) supported by ...
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WO/1998/042654A1 |
A process for separately isolating 3-nitro-o-toluic acid and 5-nitro-o-toluic acid from a mixture of both, which comprises adding an aromatic organic base such as aniline or pyridine to the mixture to form the corresponding salts, throwi...
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WO/1998/040347A1 |
A process for the purification of a compound of general formula (I), wherein R1 is hydrogen or C�1?-C�6? alkyl, C�2?-C�6? alkenyl or C�2?-C�6? alkynyl, any of which may optionally be substittuted with one or more substituents...
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WO/1998/035932A1 |
A process for producing 3-nitro-o-toluic acid which comprises oxidizing 3-nitro-o-xylene with oxygen or an oxygenic gas in a solvent based on a lower aliphatic carboxylic acid in the presence of a heavy metal catalyst and a reaction acce...
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WO/1998/032532A1 |
A catalyst for halogen-fluorine exchange reactions of aromatic compounds essentially consists of a mixture of one or more compounds (a) and at least one compound (b), (c) and/or (d). (a) is an amidophosphonium salt of formula (I), in whi...
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WO/1998/030329A1 |
At least one functional group selected between nitro and carboxyl groups can be introduced into a substrate by bringing the substrate into contact with at least one reactant selected from among (i) nitrogen oxides and (ii) carbon monoxid...
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WO/1998/025918A1 |
The invention concerns products of formula (I) in which Ar represents an aromatic monocyclic or bicyclic radical comprising 5 to 10 carbon atoms and optionally 1 or 2 heteroatoms selected among the atoms of nitrogen, oxygen or sulphur, s...
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WO/1998/024753A1 |
Optically active 1-(substituted phenyl)-2-nitro alcohol derivatives represented by general formula (1) and a process for preparing the same, and 1-(substituted phenyl)-2-amino alcohol derivatives represented by general formula (2) and a ...
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WO/1998/019978A1 |
A process for the nitration of an aromatic or heteroaromatic compound with a nitrating agent comprising nitric acid or a mixture of nitric and sulphuric acids, characterised in that nitration is performed in a solvent comprising at least...
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WO/1998/016222A1 |
The present invention relates to novel itermediates of formula (1) wherein the wavy bond ($m(k) $m(k)) represents the racemate, the (R)-enantiomer or the (S)-enantiomer; and R is hydrogen, a carboxyl-protecting group or a cation of an ad...
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WO/1998/016486A1 |
A process for the preparation of a substituted aromatic compound in which a chloroaromatic compound and an alkyl-, alkenyl- or aryl-boronic acid, ester or anhydride are coupled in the presence of palladium and a lipophilic aliphatic phos...
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WO/1998/009937A1 |
A process for preparing 1,2- and 1,3-dinitrate esters from polyols containing 1,2- or 1,3-diol fragments involves using an alkyl or aryl boronic acid to form a cyclic boronate ester derivative which is then reacted with dinitrogen pentox...
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WO/1998/005610A2 |
A process is disclosed for preparing fluorine-containing compounds by reacting a compound which contains a halogen that can be replaced by fluorine with a fluoride or a mixture of fluorides of general formula (I): MeF, in the presence of...
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WO/1998/002408A1 |
The invention concerns a method of nitrosation of a phenolic compound substituted by an electro-attracting group.The invention also concerns a method of nitration of a phenoic compound substituted by an electro-attracting group. The nitr...
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WO/1997/046511A1 |
Method and compositions for treating a patient having a neurological disease or disorder, such as stroke, head trauma, spinal cord injury, spinal cord ischemia, ischemia- or hypoxia-induced nerve cell damage, epilepsy, anxiety, neuropsyc...
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WO/1997/045397A1 |
The present invention describes certain alkyloxyamino-substituted fluorenones which inhibit protein kinase C, as well as pharmaceutical compositions including these compounds and methods of using these compounds to control protein kinase...
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WO/1997/038967A1 |
A process is disclosed for removing a light organic compound from a liquid composition comprising said light organic compound in admixture with a nitroaromatic compound, said light organic compound having a partial vapor pressure in said...
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WO/1997/038770A1 |
Reduction of dinitrotoluene impurity in water is achieved by distillation in the presence of nitric acid. A suitable process for such reduction comprises (a) contacting said composition with nitric acid to provide a nitric acid-containin...
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WO/1997/033846A1 |
The invention concerns a process for preparing nitrobiphenylene of formula (I) wherein m stands for 1 or 2, R means halogen, R' or OR', R' being a C-organic group which can carry groups which are inert in the reaction conditions, n stand...
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WO/1997/032832A1 |
The production of fluorinated aromatic compounds of general formula (I), in which W, X, Z, R1 and R2 have the meanings given in the description, from corresponding C1 or Br-containing compounds with fluorides, e.g. KF, with halogen excha...
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