Borinic Acid‐Catalyzed Regioselective Ring‐Opening of 3,4‐ and 2,3‐Epoxy Alcohols with Halides
作者:Grace Wang、Mark S. Taylor
DOI:10.1002/adsc.201901268
日期:2020.1.23
Methods for the regioselective ring‐opening of 3,4‐epoxy alcohols and 2,3‐epoxy alcohols with halide nucleophiles, using a diarylborinic acid catalyst, are disclosed. Ring‐opening occurs at the position proximal to the OH group, an effect ascribed to a catalytic tethering mechanism whereby coordination to the substrate OH group positions the diarylborinic acid to deliver a coordinated halide nucleophile