Enzyme-catalyzed formation of chiral monosubstituted mixed diesters and half esters of malonic acid in organic solvents
摘要:
Enzymes in organic solvents were used to develop a strategy for the formation of heretofore unknown chiral monosubstituted malonate diesters and half esters. This enzymatic approach is not feasible in aqueous solutions because the activated malonic hydrogen invariably undergoes fast exchange accompanied by racemization.
A convenient method for enzymatic benzyl-alkyl transesterification under mild neutral conditions
作者:Arie L. Gutman、Eleonora Shkolnik、Michal Shapira
DOI:10.1016/s0040-4020(01)89450-3
日期:——
Lipases from Candida cylindracea and from Pseudomonas fluorescens efficiently catalyse the benzyl to alkyl transesterification in organic solvents under mild conditions in nearly quantitative yields.