Patents
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Patents for C07C 253 - Preparation of carboxylic acid nitriles (14,307)
09/1991
09/17/1991US5049682 Process for the preparation of halophthalic anhydrides
09/17/1991CA1289141C Process for the production of high energy material
09/17/1991CA1289078C Pharmaceutical composition for the treatment of parkinson's disease
09/11/1991EP0445843A2 Process for the preparation of cyclopropanecarboxylic acid derivatives substituted at position 3 by a saturated halogenated chain
09/10/1991US5047570 Preparation of 2-cyano-3-aminoacrylonitrile derivatives
09/10/1991CA1288777C N-fluoropyridinium salt and process for preparing same
09/03/1991US5045548 Quinolyl methoxy compounds and their use as antiasthmatic agents
09/03/1991US5045156 Purification
08/1991
08/27/1991US5043461 Process for the production of oxides
08/27/1991US5043095 For temperature compensation and producing a large twist of helical structures
08/27/1991US5043094 Optically active bisaryl compound
08/21/1991EP0252964B1 Catalytic method for producing fluoroaromatic compounds using substituted pyridinium salts
08/20/1991US5041681 Chemical process
08/20/1991US5041639 Polysubstituted derivatives of naphtalene, their process of preparation and their application in the cosmetic and pharmaceutical fields
08/20/1991US5041629 Chemical intermediates for dyes
08/20/1991US5041604 Process for producing di(aryloxy)alkane
08/14/1991EP0441004A1 Process for preparing aromatic nitriles
08/14/1991EP0440643A1 Fluorinated 4''-cyano substituted terphenyls.
08/14/1991EP0301021B1 Amide liquid crystal compounds: mixtures and devices using them
08/08/1991WO1991005750A3 Process for producing fluorinated organic compounds
08/07/1991CN1013442B Bicyclic compound processes for prepn. thereof and pharmaceutical composition comprising same
08/07/1991CA2034640A1 Process for the preparation of 3-cyano-3, 5, 5-trimethylcyclohexanone
07/1991
07/31/1991EP0438638A1 Process for producing norcamphane dicarbonitriles
07/31/1991EP0438533A1 Muscarinic receptor antagonists
07/24/1991CN1053197A Process for manufacture of acrylonitrile and methacrylonitrile
07/17/1991EP0437290A1 Process for the preparation of 5-oxohexane nitriles and the compound 2,4-dimethyl-5-oxohexane nitrile
07/17/1991EP0437056A2 Catalyst and process for the manufacture of acrylonitrile and methacrylonitrile
07/17/1991EP0211954B1 Use of (+/-)-cis-gamma-irone in perfumery and novel process for preparing same
07/16/1991US5032314 Optically active 2-substituted-propyl ether and a liquid crystal composition
07/16/1991CA1286313C OCULOSELECTIVE .beta.-BLOCKERS
07/10/1991EP0436183A1 Process for the preparation of symmetrical azodinitrile dicarboxylic acids from keto acids
07/10/1991EP0435989A1 Process for the preparation of aromatic nitriles.
07/03/1991EP0435445A1 Method for preparing alpha beta-unsaturated nitriles
07/02/1991US5028731 Preparation of mixtures of cypermethrin or cyfluthrin isomers enriched in more active species
07/02/1991US5028256 Composition for protecting culture plants from the phytotoxic action of herbicidally active chloracetanilides
07/02/1991CA1285575C Naphthalene anti-psoriatic agents
06/1991
06/27/1991CA2032316A1 Process for the preparation of symmetrical azodinitrile dicarboxylic acids from keto acids
06/26/1991EP0433884A1 Process for the preparation of alpha-formylaminonitriles
06/26/1991EP0433883A1 Process for the preparation of alpha-formylaminonitriles
06/26/1991EP0433615A1 Process for the preparation of 1,3,3-trimethyl-5-oxo-cyclohexanecarbonitrile
06/26/1991CN1012956B Chiral liquid crystal compounds mixtures and use thereof
06/25/1991US5026862 Miticides; insecticides
06/25/1991US5026857 Cetnral nervous system disorders; antiserotonine agent
06/25/1991US5026727 1,1-Difluoro-2-alkyl-2-(4-trifluoromethoxy-phenyl)-3-(substituted benzyloxy) propane
06/25/1991CA1285283C Tricyclo (6.2.1.0 , )undecanes useful as fragrance chemicals
06/19/1991EP0432876A1 Process for production of hydrogen cyanide from crude acetonitrile
06/19/1991EP0432504A1 Process for preparing 1-(aminomethyl)cyclohexane acetic acid
06/19/1991EP0432275A1 Substituted bicycloheptandione derivatives.
06/18/1991US5024828 Iodine-labeled isomers and racemic mixtures for radioimmuno-assays of physiological fluids
06/12/1991EP0179788B1 Pesticides
06/11/1991US5023356 Forming charge transfer complex with electron donating compound
06/11/1991US5023351 α-(ω-cyanoalkanoyl-γ-butyrolactone and method for producing the same
06/05/1991EP0430434A2 Process for the preparation of fluoroaromatic and fluoroheteroaromatic compounds
06/05/1991EP0430023A1 Process for the preparation of substituted phenylcinnamates
06/05/1991EP0430001A1 Process for preparing benzaldehydes
06/04/1991US5021605 Trifluorobenzene compounds
06/04/1991US5021581 Fungicides
06/04/1991US5021191 Ferroelectricity display elements; extremely small redution in crystal temperature region
05/1991
05/29/1991EP0428928A2 Substituted aminals
05/28/1991US5019296 Bleach stabilizer, builders
05/22/1991EP0428413A1 Method for preparing unsaturated compounds
05/22/1991EP0428392A2 Optically active compounds having plural chiral centers and the production thereof
05/22/1991EP0427782A1 Terminal chlorination of normal alkane hydrocarbons
05/21/1991US5017542 Catalyst for the oxidation and ammonoxidation of α-, β-unsaturated hydrocarbons
05/18/1991WO1991007379A1 Preparation of mixtures of cypermethrin or cyfluthrin isomers enriched in more active species
05/17/1991CA2030107A1 Process for the production of 1-(aminomethyl)cyclohexane acetic acid
05/16/1991WO1991006530A1 Process for the production of ortho-nitrobenzonitriles
05/14/1991US5015761 Esters and alcohol derivatives of dimethyltricyclo(6.2.01.6)un decanes as perfumes
05/14/1991US5015756 Ammoxidation of alkenes to form unsaturated nitriles
05/08/1991EP0426468A2 Stabile polymorphic form of (E)-N,N-diethyl-2-cyano-3-(3,4-dihydroxy-5-nitrophenyl) acrylamide and the process for its preparation
05/08/1991EP0426394A1 Preparation of iminodiacetonitrile from glycolonitrile
05/08/1991EP0425930A2 Process for the preparation of symmetrical diarylacetylenes
05/08/1991EP0425806A1 Process for the preparation of 3-cyano-3,5,5'-trimethyl-1-cyclohexanone
05/08/1991EP0425743A1 Process for the production of ortho-nitrobenzonitriles
05/08/1991CN1012576B Process for preparing carboxanilides compounds
05/08/1991CN1012575B Preparation of alkanoyl anilides
05/07/1991US5013860 Oxydehydrogenation of dinitriles
05/07/1991US5013754 Synthetic pyrethroid
05/07/1991US5013476 Ferroelectric properties, electro-optical indicating device
05/07/1991CA1283918C Carboxanilides
04/1991
04/30/1991US5011971 Process for the preparation of substituted 3-amino-2 (benzoyl)-acrylic acid esters, and a process for the preparation of intermediates for antibacterial active compounds from these compounds
04/30/1991US5011969 Electrophotography light sensitive material
04/30/1991US5011968 Process for the preparation of 3-cyano-3,5,5-trimethylcyclohexanone
04/27/1991CA2028502A1 Preparation of iminodiacetonitrile from glycolonitrile
04/24/1991CN1012433B Improvements in or relating to leukotriene antagonists
04/23/1991CA1283419C Substituted di-t-butylphenols
04/23/1991CA1283410C Anthraquinoylcarboxylic acid hydrazides, curable compositions and use thereof
04/21/1991WO1991005750A2 Process for producing fluorinated organic compounds
04/21/1991CA2067387A1 Process for producing fluorinated organic compounds
04/16/1991US5008431 Charge transporting agent for electrography
04/16/1991US5008429 Process for industrial application of Knoevenagel synthesis
04/16/1991US5008427 Ammoxidation of paraffins
04/16/1991US5008414 Forming alkene from alkane by dehydrogenation, oxidation of alkene in presence of catalyst, recovering oxide from liquid phase
04/16/1991US5008412 Converting alkane to alkene in multistage dehydrogenator, oxidizing, quenching, recovering alkylene oxide, recycling effluents
04/16/1991US5008192 Enzymatic process for the preparation of optically active cyanohydrins
04/16/1991CA1283110C Herbicidal 2-(substituted-phenyl)-3-amino-2- cyclopentenone derivatives
04/16/1991CA1283076C (S) .alpha.-CYANO-3-PHENOXY BENZYL ACETATE
04/10/1991EP0421237A1 Process for the purification of crude cyanohydrins with 3 to 6 carbon atoms
04/09/1991CA1282790C Recovery of a (trifluoromethyl)-naphthalene
04/05/1991WO1991004961A1 APPARATUS FOR PRODUCING α,β-UNSATURATED NITRILE
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