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