Insertion of carbon monoxide into an aldehyde CO double bond induced by an (η3-α-silabenzyl)carbonylmolybdenum complex

Abstract

Unusual silylcarbonylation of aldehyde through CO insertion into a CO double bond induced by a metal–silicon complex has been discovered: treatment of an (η³-α-silabenzyl)carbonylmolybdenum complex with alkylaldehydes afforded isolable O-silylated Mo–C–O three-membered-ring complexes, and one of them was subsequently converted to an η³-oxaallyl complex at room temperature through CO insertion into the metallacycle C–O bond and incorporation of a CO molecule.