Regioselective synthesis of benzonitriles <i>via</i> amino-catalyzed [3+3] benzannulation reaction
作者:Lin Jiang、Wen-Fei Jin、Liu-Dong Yu、Ming-Wei Yuan、Hong-Li Li、Deng-Bang Jiang、Ming-Long Yuan
DOI:10.1177/1747519820915163
日期:2020.9
benzonitriles is achieved via amino-catalyzed [3+3] benzannulation of α,β-unsaturated aldehydes and 4-arylsulfonyl-2-butenenitriles. Using pyrrolidine as an organocatalyst via iminium activation, a series of substituted benzonitriles were obtained in good to high yields in a regioselective manner. This reaction can proceed smoothly under mild reaction conditions and without the aid of any metals, additional
通过氨基催化的 α,β-不饱和醛和 4-芳基磺酰基-2-丁烯腈的 [3+3] 苯环化,可以直接合成苯甲腈。使用吡咯烷作为有机催化剂,通过亚胺盐活化,以区域选择性的方式以良好到高产率获得了一系列取代的苯甲腈。该反应可以在温和的反应条件下顺利进行,无需任何金属、额外的氧化剂或强碱的帮助,从而使其成为一种高效且环保的获取苯甲腈的方法。