📜N-苄基苯乙酰胺 反应生成苯乙酸苄酯 参考文献:Fujii,T. Et Al.,Chemical And Pharmaceutical Bulletin,1960,Vol. 8,P. 266-269 标题:Fujii,T. Et Al.,Chemical And Pharmaceutical Bulletin,1960,Vol. 8,P. 266-269
专利信息
专利号:US-11926633-B2 优先权日:2018-08-31 标 题:Synthesis methods for upadacitinib and intermediate thereof 发明人:WANG PENG; LI PIXU; WEI QIANG; CHENG WEN; WU HAO 权利人:SUZHOU PENGXU PHARMATECH CO LTD 摘要:The present disclosure relates to a JAK inhibitor upadacitinib intermediate and a preparation method therefor, and to a preparation method for a JAK inhibitor upadacitinib. The upadacitinib intermediate of the present application is as shown in Formula (II) or Formula (III),wherein, R is a protective group of nitrogen atoms, and R1 is an open-chain or cyclic amine group. Compared with the prior art, the method for the synthesis of upadacitinib of the present application, significantly reduces cost, is environmentally-friendly. And the quality of the final product is well controlled.
专利号:US-8735589-B2 优先权日:2009-08-20 标题:Process for the synthesis of naratriptan 发明人:RAO DHARMARAJ RAMACHANDRA; KANKAN RAJENDRA NARAYANRAO; CHIKHALIKAR SANDIP VASANT; GHAGARE MARUTI 权利人:RAO DHARMARAJ RAMACHANDRA; KANKAN RAJENDRA NARAYANRAO; CHIKHALIKAR SANDIP VASANT; GHAGARE MARUTI; CIPLA LTD 摘要:The present invention relates to a process for preparing naratriptan or a salt thereof, the process comprising: (a) reacting a compound of formula (3) with a compound of the formula HCCR n nwherein Z is a protecting group, Y is a leaving group and R is a trialkyl silyl group, a trialkylstannyl group or a zinc (II) halide, to obtain the compound of formula (4); (b) converting the compound of formula (4) to a compound of formula (5)n n nwherein Z′ is hydrogen or a benzyl group; (c) converting the compound of formula (5) to naratriptan; and (d) optionally converting naratriptan to a salt thereof. The present invention also provides novel compounds (3) and (4) and processes for their preparation.
专利号:US-4128572-A 优先权日:1977-01-18 标题 :Process for preparing phenylacetic acid 发明人:CASSAR LUIGI; FOA MARCO 权利人:MONTEDISON SPA 摘要:This invention relates to a process for preparing phenylacetic acid. In particular, the present invention relates to a catalytic process for the synthesis of the alkaline salts of phenylacetic acid by carbonylation of benzyl halides in a diphase system in the presence of cobalt carbonyl complexes. More particularly, the present invention relates to a process for preparing alkaline salts of phenylacetic acid by reacting a benzyl halide selected from chloride and bromide with carbon monoxide in the presence of a catalyst consisting in a salt of cobalt hydrocarbonyl, characterized in that the reaction is conducted in an aqueous/organic diphase system consisting of (a) an aqueous solution of an inorganic alkaline base, and (b) the benzyl halide in an organic solvent, in the presence of a catalyst system composed by a quaternary alkylammonium salt and by a cobalt hydrocarbonyl salt, at atmospheric pressure and at a temperature ranging from 20 DEG to 70 DEG C about.
专利号:US-8969546-B2 优先权日:2010-06-24 标 题:Compounds useful in imaging and therapy 发明人:KUMAR PIYUSH; WIEBE LEONARD; MCEWAN ALEXANDER 权利人:KUMAR PIYUSH; WIEBE LEONARD; MCEWAN ALEXANDER; UNIV ALBERTA; ALBERTA HEALTH SERVICES 摘要:Provided in the following specification are precursors or synthons that are useful for the synthesis of various arabinose based chemical and radiochemical derivatives of nitroimidazole-containing azomycin arabinosides, such as radioiodinated 1-#-D-(5-deoxy-5-[I*]-iodoarabinofuranosyl)-2-nitroimidazole (*IAZA), and radiofluorinated 1-#-D-(5-deoxy-5-[18F]-iodoarabinofuranosyl)-2-nitroimidazole (18FAZA). Such compounds are useful in imaging, therapy, or radiotherapy. Further, various syntheses of said precursors/synthons and the incorporation of said precursors/synthons into kits is provided. The precursors/synthons provided herein allow for an improved and facile manufacturing process for nitroimidazole-containing azomycin arabinosides.
专利号:US-2012220778-A1 优先权日:2009-08-20 标题 :Process for the synthesis of naratriptan
专利号:US-3708529-A 优先权日:1969-07-23 标题:Process for preparing phenylacetic acid 发明人:CASSAR L; FOA M; CHIUSOLI G 权利人:MONTEDISON SPA 摘要:PROCESS FOR THE SYNTHESIS OF PHENYLACETIC ACID BY CARBONYLATION OF BENZYL CHLORIDE. THE PROCESS COMPRISES REACTING BENZYL CHLORIDE AND CARBON MONOXIDE UNDER ATMOSPHERIC PRESSURE, AT TEMPERATURES FROM 20* TO 80*C. IN A WATER-METHANOL MEDIUM CONTAINING UP TO 35% WATER, USING A CATALYST MIXTURE CONSISTING OF A COBALT SALT, IN IRON-MANGANESE ALLOY AND A SUPLPHURATED PROMOTING AGENT. CALCIUM OXIDE IS USED AS A NEUTRALIZING AGENT. THE CALCIUM SALT OBTAINED IS TREATED WITH A STRONG MINERAL ACID TO FREE THE PHENYLACETIC ACID.