Bromine-magnesium-exchange as a general tool for the preparation of polyfunctional aryl and heteroaryl magnesium-reagents
作者:Mohamed Abarbri、Florian Dehmel、Paul Knochel
DOI:10.1016/s0040-4039(99)01404-5
日期:1999.10
BrMg-exchange reaction for the preparation of polyfunctional aryl and heteroaryl magnesium reagents has been studied. Various functional groups (ester, cyano, bromide) were tolerated in the exchange reaction allowing the preparation of polyfunctional Mg-reagents. Several dibromo- or tribromoheterocycles undergo a chemoselective mono-BrMg exchange leading to highlyfunctionalized heterocycles.