Stereospecific Rearrangements during the Synthesis of Pyrrolidines and Related Heterocycles from Cyclizations of Amino Alcohols with Vinyl Sulfones
作者:Thomas G. Back、Masood Parvez、Huimin Zhai
DOI:10.1021/jo0350864
日期:2003.11.1
Conjugate additions of aminoalcohols derived from alpha-amino acids to vinyl sulfones, followed by N-benzylation, chlorination, and intramolecular alkylation, provide a convenient route to substituted pyrrolidines. The process is accompanied by the stereospecific rearrangement of substituents from the alpha-position of the amine to the beta-position of the product and takes place via the corresponding