Lithium amide conjugate addition for the asymmetric synthesis of 3-aminopyrrolidines
作者:Stephen G. Davies、A. Christopher Garner、Euan C. Goddard、Dennis Kruchinin、Paul M. Roberts、Humberto Rodriguez-Solla、Andrew D. Smith
DOI:10.1039/b604835h
日期:——
Conjugate addition of homochiral lithium amides to methyl 4-(N-benzyl-N-allylamino)but-2-enoate, chemoselective N-deprotection and concomitant cyclisation, followed by enolate functionalisation and deprotection allows access to syn- and anti-3,4-disubstituted aminopyrrolidines in > 98% d.e. and > 98% e.e.
将同手性锂酰胺加到4-(N-苄基-N-烯丙基氨基)丁-2-烯酸甲酯中,进行化学选择性N-去保护和伴随的环化反应,然后烯醇化功能化和去保护作用,可以得到顺式和反式3,4 -di取代的氨基吡咯烷类化合物,de≥98%,ee≥98%