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Enantioselective Synthesis of 3,3-Disubstituted 4-Piperidinones on Neutral Alumina. -The electrodeficient alkenes (IV) react with the chiral ketimine (III) on neutral alumina to give the optically active 3,3-disubstituted 4-piperidinones (V). Their absolute configuration is established by 1H NMR and CD spectra. Further examples, using other chiral amines, are described in the original paper. -(GAIDAROVA, E. L.; GRISHINA, G. V.; Synlett (1992) 1, 89-93; Dep. Chem., Moscow State Univ., Moscow 119899; EN)

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