Crystal structure, computational studies, and stereoselectivity in the synthesis of 2-aryl-thiazolidine-4-carboxylic acids via <i>in situ</i> imine intermediate
作者:Rohidas M. Jagtap、Masood A. Rizvi、Yuvraj B. Dangat、Satish K. Pardeshi
DOI:10.1080/17415993.2016.1156116
日期:2016.7.3
and diastereomeric excess (de%) have been investigated. A plausible mechanism for stereoselectivity via an in situ imine intermediate is proposed using real-time IR monitoring of the synthetic reaction based on the significant signals at 1597, 1593 cm−1 for imine (C=N) stretching. The imine mechanism for stereoselectivity was further supported by NMR studies of azomethine 13C NMR signals at 159, 160 δ ppm