CAS: 101513-77-3; 2,4,5-Trifluoro-3-Chlorobenzoic Acid

相似化合物

101513-80-8 154257-75-7 104455-98-3

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CAS号119385-80-7 3-氨基-2,4,5-三氟苯甲酸 | CAS号446-17-3 2,4,5-三氟苯甲酸 | CAS号101513-78-4 3-氯-2,4,5-三氟苯甲酰氯

1,2,4-三氟苯置于盐酸,硫酸,氢气,硝酸,氯,Sodium Hydroxide,Sodium Nitrite体系中,用 甲醇,水 用作溶剂,10.0~100.0 °C,202.66 Kpa 条件下,反应 16.2H,反应生成3-氯-2,4,5-三氟苯甲酸
参考文献:一种2,4,5-三氟-3-氯苯甲酸的制备方法
标题:一种2,4,5-三氟-3-氯苯甲酸的制备方法
摘要:本发明公开了一种2,4,5‑三氟‑3‑氯苯甲酸的制备方法,属于化学药物中间体制备方法技术领域,利用1,2,4,‑三氟苯为原料,经硝化,氯代,再硝化,还原,重氮化,Sandmeyer氰化反应和水解反应制备2,4,5‑三氟‑3‑氯苯甲酸.本发明方法,采用的原料相对廉价易得,工艺路线成熟,操作简单,收率较高,具有较高的工业化价值.

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-4885386-A
优先权日:1988-10-28
标题 :Process for the synthesis of 3-chloro-2,4,5-trifluorobenzoic acid
发明人：WEMPLE JAMES N; KARRICK GREGORY L; SPENCE FLOYD G
权利人:WARNER LAMBERT CO
摘要:An improved process for the preparation of 3-chloro-2,4,5-trifluorobenzoic acid is described which involves reaction of a diester of 3,4,5,6-tetrafluoro-1,2-benzenedicarboxylic acid with a substituted amine to afford 3-amino-2,4,5-trifluorobenzoic acid followed by subsequent conversion of the amio intermediate into 3-chloro-2,4,5-trifluorobenzoic acid.

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:EP-0539274-B1
优先权日:1991-10-24
标题 :Method for the synthesis of aldehydes and of their derivatives

专利号:JP-2886908-B2
优先权日:1988-10-28
标题:Improved synthesis of 3-chloro-2,4,5-trifluorobenzoic acid

专利号:ES-2053908-T3
优先权日:1988-10-28
标题 :IMPROVED PROCESS FOR THE SYNTHESIS OF 3-CHLORO-2,4,5-TRIFLUOROBENZOIC ACID.