Preparation of Thioanisole Biscarbanion and C–H Lithiation/Annulation Reactions for the Access of Five-Membered Heterocycles
作者:Ranran Zhu、Zheyuan Liu、Jie Chen、Xiaoyu Xiong、Yuntao Wang、Lin Huang、Jinshan Bai、Yanfeng Dang、Jianhui Huang
DOI:10.1021/acs.orglett.8b00850
日期:2018.6.1
The synthesis, isolation, and X-ray structure of a thioanisole-based trilithium complex are reported. On the basis of the double-lithiation strategy, two novel synthetic methodologies have been developed under mild reaction conditions (room temperature): (1) reactions of lithiated thioanisoles with nitriles give benzoisothiazoles via a [3 + 2]-type of approach with two new bond formations and (2) formation
报道了基于硫代苯甲醚的三锂配合物的合成,分离和X射线结构。在双重锂化策略的基础上,在温和的反应条件(室温)下开发了两种新颖的合成方法:(1)锂硫代苯甲醚与腈的反应通过[3 + 2]型方法得到苯并异噻唑,其中两种新的键形成和(2)通过[4 +1]模式由硫代苯甲醚和酰胺形成苯并噻吩,形成4个新的化学键。