<i>anti</i>-Selective, Catalytic Asymmetric Vinylogous Mukaiyama Mannich Reactions of Pyrrole-Based Silyl Dienolates with <i>N</i>-Aryl Aldimines
作者:Claudio Curti、Lucia Battistini、Beatrice Ranieri、Giorgio Pelosi、Gloria Rassu、Giovanni Casiraghi、Franca Zanardi
DOI:10.1021/jo1021234
日期:2011.4.1
Pyrrole-based silyl dienolates undergo asymmetric vinylogous Mukaiyama Mannich reactions with a series of N-aryl aldimines in the presence of the Hoveyda-Snapper amino acid-derived silver(I) catalysts. The Manrdch products alpha,beta-unsaturated delta-ammo-gamma-butyrolactams-are typically obtained in high yields, excellent gamma-site selectivities and anti-diastereoselectivities, and up to 80% enantioselectivity.