Hydroboration of Arynes with N-Heterocyclic Carbene Boranes
作者:Tsuyoshi Taniguchi、Dennis P. Curran
DOI:10.1002/anie.201408345
日期:2014.11.24
Arynes were generated in situ from ortho‐silyl aryl triflates and fluoride ions in the presence of stable N‐heterocyclic carbeneboranes (NHCBH3). Spontaneous hydroboration ensued to provide stable B‐aryl‐substituted NHC‐boranes (NHCBH2Ar). The reaction shows good scope in terms of both the NHC‐borane and aryne components and provides direct access to mono‐ and disubstituted NHC‐boranes. The formation