%A A Solovyev
%A SJ Geib
%A E Lac?te
%A DP Curran
%J Organometallics
%T Reactions of boron-substituted N-heterocyclic carbene boranes with triflic acid. Isolation of a new dihydroxyborenium cation
%X Reactions of NHC-BH 2X (where X = Cl, OTf and NHC = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) with 1 equiv of triflic acid provide the stable products of acid/base reactions NHC-BH(OTf) 2 and NHC-BH(OTf)Cl. Further reactions of these compounds with additional triflic acid (or direct reactions of NHCBH 3 with excess triflic acid) produce the isolable dihydroxyborenium triflate [NHCB(OH) 2] +TfO -. This first-in-class ligated borenium ion has been characterized by NMR spectroscopy and X-ray crystallography. ? 2011 American Chemical Society.
%N 1
%P 54 - 56
%V 31
%D 2012
%R 10.1021/om201260b
%L pittir17805