Oxidative Addition of the B−Cl Bond with Palladium Species and Insertion of Alkynes and a Vinyl Ketone into the Resulting B−Pd Bond

Abstract

The chloroborane (1) reacts with Pd(η3-C3H5)(η5-C5H5) and PMe3 (2 equiv) to afford (2), which was characterized by X-ray crystallography. Treatment of complex 2 with alkynes or methyl vinyl ketone gave chloro(1-boryl-1-alken-2-yl)palladium complexes or a chloro(3-boroxy-2-buten-1-yl)palladium complex, respectively.