Cobalt-Catalyzed Hydrosilylation/Cyclization of 1,6-Enynes

J Org Chem. 2016 Oct 7;81(19):8858-8866. doi: 10.1021/acs.joc.6b01555. Epub 2016 Sep 16.

Abstract

An iminopyridine cobalt dichloride complex was synthesized and demonstrated as an effective precatalyst for hydrosilylation/cyclization of 1,6-enynes with silanes. Various functional groups such as amine, free aniline, ester, ether, cyano, halide, trifluoromethyl, and heterocycle were tolerated to afford a variety of silicon-containing compounds. The reaction could be scaled up to afford products on the gram scale which could undergo further derivatizations. A primary mechanism was proposed based on analysis of side products and a deuterated experiment.

Publication types

  • Research Support, Non-U.S. Gov't