S<sub>N</sub>2 vs. E2 on quaternary centres: an application to the synthesis of enantiopure β<sup>2,2</sup>-amino acids
作者:Alberto Avenoza、Jesús H. Busto、Francisco Corzana、Gonzalo Jiménez-Osés、Jesús M. Peregrina
DOI:10.1039/b400282b
日期:——
SN2 and E2 competing reactions in cyclic sulfamidates can be modulated by the change of an amide group to an ester group attached to the quaternary carbon activated for the nucleophilic attack, allowing an easy approach to enantiopure α,α-disubstituted β-amino acids.
在环状磺酰胺酯中,SN2和E2竞争反应可以通过将连接于四级碳上的酰胺基团改为酯基团来调控,四级碳被活化以进行亲核攻击,这样就能方便地获得高光学纯度的α,α-二取代β-氨基酸。