Dynamic Kinetic Resolution of 1,3-Dihydro-2<i>H</i>-isoindole-1-carboxylic Acid Methyl Ester: Asymmetric Transformations toward Isoindoline Carbamates
作者:Roberto Morán-Ramallal、Vicente Gotor-Fernández、Pedro Laborda、Francisco J. Sayago、Carlos Cativiela、Vicente Gotor
DOI:10.1021/ol300250h
日期:2012.4.6
Asymmetric syntheses of isoindoline carbamates have been successfully achieved through enzyme-mediated dynamic kinetic resolution processes and without requirement of metal or acid–base catalyst for the substrate racemization. Optically active carbamates were obtained in good yields and an excellent degree of stereoselectivity when Pseudomonas cepacia lipase (PSL) was used as biocatalyst, with diallyl
异吲哚啉氨基甲酸酯的不对称合成已通过酶介导的动态动力学拆分过程成功完成,不需要金属或酸碱催化剂进行底物消旋。当将假单胞菌洋葱脂肪酶(PSL)用作生物催化剂时,以高收率和优异的立体选择性获得旋光性氨基甲酸酯,其中碳酸二烯丙基酯或碳酸二苄酯都是烷氧基羰基化反应中的合适试剂。