Asymmetric Synthesis of α-Alkyl α-Selenocarbonyl Compounds Catalyzed by Bifunctional Organocatalysts
作者:Vanesa Marcos、Jose Alemán、Jose L. Garcia Ruano、Francesca Marini、Marcello Tiecco
DOI:10.1021/ol200923p
日期:2011.6.17
A new organocatalytic approach for the synthesis of a variety of α-alkyl, α-phenylselenyl ketones as well as their corresponding esters and amides, by the addition of α-selenocarbonyl derivatives to nitroalkenes catalyzed by thiourea or squaramide cinchona catalysts, is presented. This catalytic system allows the preparation in high yields of enantiomerically enriched selenocarbonyl derivatives bearing