Catalyst-Controlled Switch in Chemo- and Diastereoselectivities: Annulations of Morita-Baylis-Hillman Carbonates from Isatins
作者:Gu Zhan、Ming-Lin Shi、Qing He、Wei-Jia Lin、Qin Ouyang、Wei Du、Ying-Chun Chen
DOI:10.1002/anie.201510825
日期:2016.2.5
the chemo‐ and diastereoselectivity, divergently, of a reaction is highly attractive but extremely challenging. Presented herein is a catalyst‐controlled switch in the chemo‐ and diastereodivergent annulation reactions of Morita–Baylis–Hillman carbonates, derived from isatins and 2‐alkylidene‐1H‐indene‐1,3(2H)‐diones, in exclusive α‐regioselectivity. α‐Isocupreine efficiently catalyzed [2+1] reactions
分别调节反应的化学选择性和非对映选择性极具吸引力,但极具挑战性。本文介绍的是衍生自靛红和2-亚烷基-1H-茚-1,3(2 H)的Morita-Baylis-Hillman碳酸盐的化学和非对映异构环化反应中的催化剂控制开关。)二酮,具有排他性的α区域选择性。α-异cupreine可有效催化[2 + 1]反应以获得环丙烷衍生物,并且通过使用手性膦或DMAP型分子可实现非对映发散[3 + 2]环化。所有反应均表现出优异的化学选择性,并提供了良好至显着的立体选择性,因此可收集具有骨架和立体异构性的化合物。此外,DFT计算计算阐明了基于催化剂的机理。