Domino conversions of allyl tetronates and 4-allyloxycoumarins to all-trans 1,3,4,5-tetrasubstituted γ-butyrolactams
作者:Rainer Schobert、Arno Bieser、Gillian Mullen、Gary Gordon
DOI:10.1016/j.tetlet.2005.06.055
日期:2005.8
All-trans 1,3,4,5-tetrasubstituted γ-butyrolactams 3 and 7 are readily available in one-pot fromallyltetronates or 4-allyloxycoumarins and amines via a four-step domino Claisen–Conia ring-opening transamidation reaction.