Scalable Methodology for the Catalytic, Asymmetric α-Bromination of Acid Chlorides
作者:Cajetan Dogo-Isonagie、Tefsit Bekele、Stefan France、Jamison Wolfer、Anthony Weatherwax、Andrew E. Taggi、Thomas Lectka
DOI:10.1021/jo061522l
日期:2006.11.1
The optimization of a practical, catalytic, asymmetric process for the α-bromination of acidchlorides to produce synthetically versatile, optically active α-bromoesters is reported. A range of products is produced in high enantioselectivity and moderate to good chemical yields with retention of both upon scale-up. The reactions herein are catalyzed by cinchona alkaloid derivatives, with the best performance