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脂肪酶对2型胺类化合物酚胺化反应的光学异构选择性
The Enantiopreference of Lipase to Amidation of Type 2 Amines
【摘要】 提出了 2型胺(氨基直接与手性中心 C连接,且手性中心C上只含有一个 H)在CAL批肪酶催化作用下,酰胺化的异构选择规则。即按手性中心C上取代基的大小来识别和决定反应的立体构型,与仲醇一致,R-型对映异构体优先反应。
【Abstract】 An empirical rule for amidation of Type 2 amines (in which the amino group attaches directly to the chiral carbon and only one H atom is at it) catalysis by lipase from candida antrarctica(CAL) is proposed. It decides which enantiomer reacts faster based on the relative sizes of the substituents at the stereocenter, and indicates that the empirical rule is the same one as the secondary alcohols, and that the Renantiomer reacts faster.
【关键词】 CAL;
2型胺;
手性中心C;
酰胺化;
异构选择;
【Key words】 CAL; Type 2 amines; amidation; chiral carbon; enantiopreference;
【Key words】 CAL; Type 2 amines; amidation; chiral carbon; enantiopreference;
- 【文献出处】 青岛化工学院学报(自然科学版) ,JOURNAL OF QINGDAO INSTITUTE OF CHEMICAL TECHNOLOGY , 编辑部邮箱 ,2000年04期
- 【分类号】O629
- 【下载频次】53