-
公开(公告)号:US4760204A
公开(公告)日:1988-07-26
申请号:US385
申请日:1987-01-05
IPC分类号: C07B63/00 , B01J20/26 , C07B31/00 , C07C27/00 , C07C29/74 , C07C29/76 , C07C31/10 , C07C67/00
CPC分类号: C07C29/76
摘要: A process for deodorizing technical-grade isopropyl alcohol by contacting the alcohol with a strongly acidic cation exchange resin loaded with silver in ionic form is provided.
摘要翻译: 提供了通过使醇与负载有离子形式的银的强酸性阳离子交换树脂接触而使工业级异丙醇除臭的方法。
-
公开(公告)号:US4028406A
公开(公告)日:1977-06-07
申请号:US657835
申请日:1976-02-13
IPC分类号: C07D277/06 , C07C99/00
CPC分类号: C07D277/06 , Y10S426/807
摘要: Improvements in the process of preparing penicillamine or a homolog thereof by reacting an .alpha.-carbon atom branched aldehyde, sulfur and ammonia to form a thiazoline-.DELTA..sup.3, reacting the thiazoline-.DELTA..sup.3 with anhydrous hydrogen cyanide to form a thiazolidine-4-carbonitrile, hydrolyzing the nitrile to form a mixture of the salt of the thiazolidine-4-carboxylic acid and ammonium salts, separating off the ammonium salts and hydrolytically decomposing the thiazolidine-4-carboxylic acid, wherein under the action of a mineral acid the thiazolidine-4-carbonitrile is in the first stage converted at low temperatures into the salt of the thiazolidine-4-carbonamide and then at higher temperatures converted into the salt of the thiazolidine-4-carboxylic acid.
摘要翻译: 通过使α-碳原子支链醛,硫和氨反应形成噻唑啉-DTA 3,制备青霉胺或其同系物的方法的改进,使噻唑啉-DTA 3与无水氰化氢反应形成噻唑烷-4-腈 水解腈形成噻唑烷-4-羧酸盐和铵盐的混合物,分离出铵盐并水解分解噻唑烷-4-羧酸,其中在无机酸的作用下,噻唑烷-4-酮 4-甲腈在第一阶段在低温下转化成噻唑烷-4-碳酰胺的盐,然后在更高的温度下转化成噻唑烷-4-羧酸的盐。
-
公开(公告)号:US3966752A
公开(公告)日:1976-06-29
申请号:US520899
申请日:1974-11-04
IPC分类号: C07D277/06 , C07D277/60
CPC分类号: C07D277/60 , C07D277/06
摘要: The D-form of an optically active protected penicillamine is prepared by treating a solution of D,L protected penicillamine of the formula: ##EQU1## wherein Ac is formyl, and R.sub.1 and R.sub.2 are both methyl or are joined together to form the pentamethylene group.
摘要翻译: 光学活性受保护的青霉胺的D型是通过将下式所示的D,L保护的青霉胺溶液,其中Ac是甲酰基,其中Ac是甲酰基来处理,其结果为:COOH | HC-N-Ac || CH 3 R1 ANGLE CC ANGLE CH3 ANGLE R2 R1和R2都是甲基或连接在一起形成五亚甲基。
-
-