Organocatalytic Enantioselective One-Pot Four-Component Ugi-Type Multicomponent Reaction for the Synthesis of Epoxy-tetrahydropyrrolo[3,4-<i>b</i>]pyridin-5-ones
作者:Yingpeng Su、Marinus J. Bouma、Lilian Alcaraz、Mike Stocks、Mark Furber、Géraldine Masson、Jieping Zhu
DOI:10.1002/chem.201202174
日期:2012.10.1
Enantioselectivemulticomponent reaction: In the presence of a catalytic amount of chiral BINOL‐derived phosphoric acid (TRIP), the reaction of an α‐isocyanoacetate 1, an aldehyde 2, and an aniline 3, followed by addition of a toluene solution of α,β‐unsaturated acyl chloride 4 afforded the oxa‐bridged tricycle 5 in excellent yield, diastereoselectivity, and enantioselectivity. Six chemical bonds,