Copper(I) Halide Promoted Diastereoselective Synthesis of Chiral Propargylamines and Chiral Allenes using 2-Dialkylaminomethylpyrrolidine, Aldehydes, and 1-Alkynes
作者:Ramani Gurubrahamam、Mariappan Periasamy
DOI:10.1021/jo302534f
日期:2013.2.15
Copper bromide promoted reactions of aldehydes, 1-alkynes, and chiral 2-dialkylaminomethylpyrrolidine at 25 °C give the corresponding chiral propargylamine derivatives in up to 96% yield and 99:1 dr that are readily converted to the corresponding disubstitued chiral allenes in up to 81% yield and 99% ee upon reaction with CuI in dioxane at 100 °C.
在25°C下,溴化铜促进醛,1-炔烃和手性2-二烷基氨基甲基吡咯烷的反应,可以以高达96%的收率和99:1 dr的速率得到相应的手性炔丙基胺衍生物,这些衍生物很容易转化为相应的被破坏的手性丙二烯在100°C下与CuI在二恶烷中反应后,产率为81%,ee为99%。