Oxidative Coupling of an Acyl Ligand with a Carbene Ligand on a

Organometallics 1995, 14, 3574-3577

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Oxidative Coupling of an Acyl Ligand with a Carbene Ligand on a Chromium Center To Produce a-Alkoxy Enones G. M. Wieber, L. S. Hegedus,* and Celeste Gale Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523 Received February 16, 1995@ Summary: Treatment of chromium alkoxycarbene complexes having a-protons with 2 equivs of organolithium reagents led first to a-deprotonation followed by attack of the organolithium reagent at a metal-bound carbon monoxide to produce a species which, upon oxidation, led to coupling of the two organic fragments to produce a-alkoxy enones.