Scalable Electrochemical Dehydrogenative Lactonization of C(sp<sup>2</sup>/sp<sup>3</sup>)–H Bonds
作者:Sheng Zhang、Lijun Li、Huiqiao Wang、Qian Li、Wenmin Liu、Kun Xu、Chengchu Zeng
DOI:10.1021/acs.orglett.7b03617
日期:2018.1.5
A practical, electrochemical method is developed for the direct dehydrogenative lactonization of C(sp2/sp3)–H bonds under external oxidant- and metal-free conditions, delivering diverse lactones, including coumarin derivatives with excellent regioselectivity. The scalable nature of this newly developed electrochemical process was demonstrated on a 40 g scale following an operationally simple protocol
开发了一种实用的电化学方法,用于在无外部氧化剂和无金属的条件下对C(sp 2 / sp 3)–H键进行直接脱氢内酯化,从而提供多种内酯,包括具有优异区域选择性的香豆素衍生物。遵循操作简单的协议,以40 g规模展示了这种新开发的电化学过程的可扩展性。C(sp 3)-H键的远程内酯化将构成朝着电化学C-O键形成的重要合成进展。