Concise Synthesis of Chromene/Chromane-Type Aryne Precursors and Their Applications
作者:Yuan-Ze Xu、Jia-Wei Tian、Feng Sha、Qiong Li、Xin-Yan Wu
DOI:10.1021/acs.joc.1c00493
日期:2021.5.7
The gram-scale synthesis of 5,6-, 6,7-, and 7,8-chromene/chromane-type aryne precursors and their applications in regioselective transformation to other functional derivatives is reported. Chromene/chromane-type arynes are generated under mild conditions, which can further undergo [2 + 2], [3 + 2], and [4 + 2] cycloaddition reactions, nucleophilic addition reactions, and σ-insertion reactions to produce
报道了5,6-,6,7-和7,8-亚甲基/苯并二氢吡喃型芳烃前体的克级合成及其在向其他功能衍生物的区域选择性转化中的应用。Chromene / chromane型芳烃是在温和条件下产生的,可以进一步进行[2 + 2],[3 + 2]和[4 + 2]环加成反应,亲核加成反应和σ插入反应,从而产生结构新颖的取代的色烯和苯并二氢吡喃。在三键邻位的含氧引导基团促进了反应的优异区域选择性,该基团可以被除去或切换成其他官能团,包括烯基,芳基,杂芳基和芳基氨基。