Direct Amination of Olefins through Sequential Triazolinedione Ene Reaction and Carbanion-Assisted Cleavage of the N−N Urazole Bond
作者:Waldemar Adam、Aurelia Pastor、Thomas Wirth
DOI:10.1021/ol000044c
日期:2000.5.1
yields by the base-catalyzed hydrolysis of trialkylated allylic urazoles 3; the latter are prepared by the TAD ene reaction of the appropriate olefin and further N-alkylation with alpha-bromoacetophenone. The proposed mechanism for this novel urazole rupture is based on the generation of a carbanion adjacent to the hydrazide functionality, which induces urazole ring-opening by cleavage of the N-N bond