Lithium Cobalt-Bis-Dicarbollide: A Novel Lewis Acid Catalyst for the Conjugate Addition of Silyl Ketene Acetals to Hindered α,β-Unsaturated Carbonyl Compounds

Article abstract of DOI:10.1021/jo00102a009

The novel Lewis acid, lithium cobalt-bis-carbollide (1), in which the lithium ion is weakly coordinated to the Co(B9C2H11)2(1-) anion, is an effective, soluble catalyst for Mukaiyama-Michael reactions.