Pinacol Boronates by Direct Arene Borylation with Borenium Cations
作者:Alessandro Del Grosso、Paul J. Singleton、Christopher A. Muryn、Michael J. Ingleson
DOI:10.1002/anie.201006196
日期:2011.2.25
Borenium does it direct: A boron analogue of the Friedel–Crafts reaction uses inexpensive catecholatoborenium cations that are sufficiently electrophilic to borylate arenes by electrophilic aromatic substitution. The direct arene borylation proceeds with high regioselectivity for a range of anilines, N‐heterocycles, and thiophenes. Subsequent one‐pot transesterification provides the synthetically useful