CAS: 2050-67-1; Pcb 11

上下游产品

3-chloro-aniline 1-bromo-3-chlorobenzene carbon monoxide 3-iod°Chlorobenzene biphenyl 1-phenyl-1-cyclohexane 72H50N4C72H50N4

📜间氯溴苯置于potassium Carbonate体系中,用 乙醇,水 用作溶剂,化学反应 4.0H,以87%的收率获得3,3'-二氯联苯
参考文献:双金属au-Pd纳米链网络:简便的合成及其在联芳基合成中的应用†
标题:双金属au-Pd纳米链网络:简便的合成及其在联芳基合成中的应用†
摘要:描述了一种简单易行的方法,用于形态受控的双金属au-Pd合金纳米链网络(nnc)的合成,该方法对水中的芳香族或烷基卤化物(x = I,Br,Cl)的ullmann分子间均偶联表现出高催化性能介质,并且可以重复使用至少五次,也可以应用于分子内同质耦合.
Doi:10.1039/c7Nj00998D

专利信息

专利号:US-7919618-B2
优先权日:2006-08-04
标 题:Synthesis of piperazines, piperidines and related compounds
发明人：BURGOON JR HUGH ALFRED; KANAMARLAPUDI RAMANAIAH C; WU WENXUE
权利人:LEXICON PHARMACEUTICALS INC
摘要:Novel methods of synthesizing piperazines, piperidines and related compounds are disclosed, as are compounds useful for their preparation.

专利号:US-2008177070-A1
优先权日:2006-08-04
标 题 :Synthesis of piperazines, piperidines and related compounds

专利号:EP-2084144-B1
优先权日:2006-08-04
标 题:Synthesis of piperazines, piperidines and related compounds

专利号:WO-2008019279-A2
优先权日:2006-08-04
标题:Synthesis of piperazines, piperidines and related compounds

专利号:US-11981616-B2
优先权日:2021-03-23
标题:Method for preparing 3,3′-diaminobenzidine
发明人：LING YUN; LI YONGFANG; WANG KUN; CHEN LIZHU; YIN WEI; ZHANG JINYING
权利人:HUBEI HUIDA HIGH TECH CO LTD; BORUN HIGH TECH CO LTD
摘要:A method for preparing 3,3′-diaminobenzidine, the method comprising the following steps: subjecting 4,4′-biphenol and N,N-dimethylsulfamoyl chloride to an esterification reaction in a specified solvent at 40-70° C. to obtain 4,4′-biphenyl bis(N,N-dimethylaminosulfonate) as a first intermediate; subjecting the 4,4′-biphenyl bis(N,N-dimethylaminosulfonate) to a chlorination reaction with a chlorinating reagent under acidic conditions to obtain 3,3′-dichloro-4,4′-biphenyl bis(N,N-dimethylaminosulfonate) as a second intermediate; subjecting the second intermediate 3,3′-dichloro-4,4′-biphenyl bis(N,N-dimethylaminosulfonate) to an ammonolysis reaction with anammoniation reagent in the presence of a combined catalyst to obtain a crude product of 3,3′,4,4′-tetraaminobiphenyl, wherein the combined catalyst is a mixture of proline, a cuprous salt and a phase transfer catalyst; and subjecting the crude product of 3,3′,4,4′-tetraaminobiphenyl to a post-treatment to obtain a purified 3,3′,4,4′-tetraaminobiphenyl product. In the present invention, 4,4′-biphenol is used as a raw material, a brand-new synthesis route is used, the product purity is high, and pollution of three kinds of waste is reduced.