α-Thiosubstituted chiral imines/secondary enamines: their use in the asymmetric Michael reaction
作者:Mohammed Nour、Kimny Tan、Christian Cavé、David Villeneuve、Didier Desmaële、Jean d’Angelo、Claude Riche
DOI:10.1016/s0957-4166(00)00021-5
日期:2000.3
The asymmetric Michael reaction between 2-thiosubstituted chiral imines/secondary enamines derived from (S)I-phenylethylamine and electrophilic alkenes (methyl acrylate, MVK) was investigated. 2-Phenylthio derivatives furnished the expected Michael adducts with excellent ee. By contrast, an in situ elimination of p-toluenesulfenic acid took place when using the p-toluenesulfinyl analogs. (C) 2000 Elsevier Science Ltd. All rights reserved.