Preparation of NHC borane complexes by lewis base exchange with amine- and phosphine-boranes

Abstract

A versatile new method for the preparation of NHC boranes starting from two stable, readily available reactants-an heterocyclic salt and an amine or phosphine-borane-is reported. It uses a Lewis base exchange at boron and provides easy access to new NHC boranes, in particular B-substituted borane ones. © 2010 American Chemical Society