Aryne-mediated [2,3]-sigmatropic rearrangement of tertiary 2,3-allenylamines bearing an electron-withdrawing group at the α-position
作者:Lu Han、Xue-Ting Zhang、Dong Xie、Shi-Kai Tian
DOI:10.1039/d1ob00887k
日期:——
An unprecedented [2,3]-sigmatropic rearrangement reaction of quaternary 2,3-allenylammonium ylides, generated in situ from tertiary 2,3-allenylamines and arynes, has been established. With 2-(trimethylsilyl)aryl triflates as aryne precursors, a range of tertiary 2,3-allenylamines bearing an electron-withdrawing group at the α-position smoothly participated in the aryne-mediated [2,3]-sigmatropic rearrangement
已经建立了由叔 2,3-烯基胺和芳烃原位生成的季 2,3-烯基铵叶立德的前所未有的 [2,3]-σ 重排反应。以 2-(三甲基甲硅烷基)芳基三氟甲磺酸酯作为芳烃前体,一系列在 α 位带有吸电子基团的叔 2,3-烯丙胺在室温下顺利参与芳烃介导的 [2,3]-σ 重排,以中等至优异的产率提供结构多样的 2-乙烯基烯丙胺或 1-氨基-1,3-二烯。该反应在没有强碱和过渡金属的情况下进行,与水分和空气相容,并能耐受多种官能团。