Nonstabilized Carbanion Equivalents. Carbanions of alkali and alkaline earth cations: (i) synthesis and structural characterization. Carbanions of alkali and alkaline earth cations: (ii) selectivity of carbonyl addition reactions. Organoaluminum reagents. Organocopper reagents. Organo-titanium and organo-zirconium reagents. Organochromium reagents. Organo-zinc, -cadmium and -mercury reagents. Organocerium reagents. Samarium and ytterbium reagents. Lewis acid carbonyl complexation. Lewis acid promoted addition reactions of organometallic compounds. Nucleophilic addition to imines and imine derivatives. Nucleophilic addition to carboxylic acid derivatives. Heteroatom-Stabilized Carbanion Equivalents. Nitrogen stabilization. Boron stabilization. Sulfur stabilization. The Benzoin and related reactions. Silicon stabilization. Selenium stabilization. Transformation of the Carbonyl Group into Nonhydroxylic Groups. Alkene synthesis. Epoxidation and related processes. Skeletal reorganizations: chain extension and ring expansion. Author index. Subject index.