A simple and facile method for regio- and stereoselective bromoformyloxylation and bromoacetoxylation of olefins using NH4Br and oxone®
作者:Mameda Naresh、Peraka Swamy、Macharla Arun Kumar、Marri Mahender Reddy、Kodumuri Srujana、Nama Narender
DOI:10.1016/j.tetlet.2014.04.103
日期:2014.7
temperature is described. This method is facile, environmentally friendly and cost effective. A variety of terminal, internal and cyclic alkenes reacted smoothly to give the corresponding bromoformate and acetate products in good to excellent yields. Moreover, 1,2-disubstituted olefins provided moderate to excellent diastereoselectivity.
描述了在室温下不使用催化剂的情况下,在亲核源(DMF或DMA)中使用NH 4 Br和oxone®从烯烃制备溴甲酸酯和溴乙酸酯的温和有效方案。该方法简便,环保且具有成本效益。各种末端,内部和环状烯烃均能平稳反应,以高至极好的收率得到相应的溴甲酸酯和乙酸酯产物。而且,1,2-二取代的烯烃提供了中等至优异的非对映选择性。