CAS: 455-86-7; 3,4-Difluorobenzoic Acid

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CAS号2927-34-6 3,4-二氟甲苯 | CAS号32137-19-2 3,4-二氟三氟甲苯 | CAS号127-19-5 N,N-二甲基乙酰胺(DMAC) | CAS号18959-31-4 4,5-二氟邻苯二甲酸 | CAS号18959-30-3 4,5-二氟邻苯二甲酸酐 | CAS号456-22-4 对氟苯甲酸 | CAS号127269-25-4 Benzoyl fluorid... | CAS号1489-53-8 1,2,3-三氟苯 | CAS号369-33-5 3,4-二氟苯乙酮 | CAS号367-11-3 邻二氟苯 | CAS号455-38-9 间氟苯甲酸 | CAS号65-85-0 苯甲酸 | CAS号150444-93-2 2-氯-3,4-二氟苯甲酸 | CAS号85118-04-3 3,4-二氟苯甲酰胺 | CAS号188345-25-7 3,4-二氟-N-甲氧基-N-... | CAS号64248-62-0 3,4-二氟苯腈 | CAS号76903-88-3 3,4-二氟苯甲酰氯 | CAS号129951-46-8 4,5-Difluoro-2-... | CAS号144267-96-9 3,4-二氟苯甲酸乙酯 | CAS号20372-63-8 4,5-二氟-2-硝基苯甲酸

4-氯三氯甲苯置于potassium Fluoride,Sodium Hydroxide,氯化亚砜,Chlorosulphuric Acid,四苯基溴化膦体系中,用 环丁砜,甲苯,乙腈,苯 作为反应溶剂,120.0~210.0 °C,36.0 Kpa 条件下,反应 28.0H,反应生成 3,4-二氟苯甲酸
参考文献:氟化钾交换法通用高效合成间氟芳烃
标题:氟化钾交换法通用高效合成间氟芳烃
摘要:发现四苯基溴化鏻是一种合适的催化剂,用于在化学计量量的邻苯二甲酰氯存在下,使带有氰基,硝基,氯羰基,三氟甲基和氯磺酰基的间硝基芳基衍生物与氟化钾反应,得到相应的间氟芳烃衍生品收益非常好.还发现该催化剂通过使用反应蒸馏技术对间(氟磺酰基)芳基衍生物进行氟脱磺酰化以提供间氟芳烃是有效的.
DOI:10.1246/bcsj.63.2010

专利信息

专利号:US-6180830-B1
优先权日:1995-11-08
标题 :Method for preparing a bimetallic ruthenium/tin catalyst and a process for the synthesis of aldehydes
发明人：JACQUOT ROLAND
权利人:RHODIA CHIMIE SA
摘要:The present invention relates to a new process for the preparation of a bimetallic ruthenium/tin catalyst. The process for the preparation of a bimetallic ruthenium/tin catalyst according to the invention is characterised by the fact that it consists in carrying out the reduction of a ruthenium complex having an electrovalency of -4 and a coordination number of 6, the ligands being either a halogen atom or an anion or a tin halide. The catalyst is further employed for the preparation of aldehydes by reduction, in the vapor phase, of carboxylic acids, esters and anhydrides.

专利号:US-6664282-B2
优先权日:1999-09-17
标 题:Synthesis of [3,5,7]-1H-imidazo [1,5-a]imidazol-2 (3H)- one compounds
发明人：ELABDELLAOUI HASSAN M; OSTRESH JOHN M; HOUGHTEN RICHARD A
权利人:TORREY PINES INST
摘要:Individual substituted [3,5,7]-1H-imidazo[1,5-a]imidazol-2(3H)-one compounds and their pharmaceutically-acceptable salts are disclosed, as are libraries of such compounds. Methods of preparing and using the libraries of compounds as well as individual compounds of the libraries are also disclosed.

专利号:WO-2024126692-A1
优先权日:2022-12-15
标题 :Peracid promoters in the iridium-catalyzed hydrosilylation synthesis of haloalkylorganosilanes
发明人：SCHOLZ HENRIK; KROKE EDWIN; KRAUSHAAR KONSTANTIN; GLATZER HOLGER JÃœRGEN; LEWIS KENRICK MARTIN; WAGNER ROLAND
权利人:MOMENTIVE PERFORMANCE MAT GMBH
摘要:The present invention is directed at a process for producing a compound of Formula (I): (R1)y(R2O)3-ySiCH2CHR3CR4R5X comprising reacting (a) an olefinic halide; (b) an alkoxysilane; (c) a catalytically effective amount of iridium-containing catalyst; and (d) a reaction-promoting effective amount of a peroxycarboxylic acid to produce the product of Formula (I).

专利号:US-5476827-A
优先权日:1991-10-24
标题 :Process for the synthesis of aldehydes and their derivatives and catalyst for use thereof
发明人：FERRERO ROSE-MARIE; JACQUOT ROLAND
权利人:RHONE POULENC CHIMIE
摘要:A process for the preparation of aldehydes by hydrogen reduction of carboxylic acids, esters or anhydrides, characterized in that the reduction conducted in the vapor phase, in the presence of a bimetallic catalyst of the ruthenium/tin type.

专利号:US-5436368-A
优先权日:1990-10-31
标题:Intermediates in the preparation of 4,5-difluoroanthranillic acid
发明人：BRAISH TAMIM F
权利人:PFIZER
摘要:Compounds of the formula ##STR1## which are intermediates in the preparation of 4,5-difluoroanthranilic acid, an intermediate itself in the synthesis of quinolone antibacterials, and methods of preparing these intermediates.

专利号:US-5856107-A
优先权日:1997-02-04
标 题 :Combinatorial libraries of imidazol-pyrido-indole and imidazol-pyrido-benzothiophene derivatives, methods of making the libraries and compounds therein
发明人：OSTRESH JOHN M; HOUGHTEN RICHARD A
权利人:TREGA BIOSCIENCES INC
摘要:The invention provides a rapid approach for combinatorial synthesis and screening of libraries of imidazol-pyrido-indole and imidazol-pyrido-benzothiophene compounds. The present invention further provides methods of preparing the libraries and the individual compounds made by the combinatorial synthesis.