Visible‐Light‐Induced Vicinal Dichlorination of Alkenes through LMCT Excitation of CuCl
<sub>2</sub>
作者:Pengcheng Lian、Wenhao Long、Jingjing Li、Yonggao Zheng、Xiaobing Wan
DOI:10.1002/ange.202010801
日期:2020.12.21
AbstractThis work demonstrates photoredox vicinal dichlorination of alkenes, based on the homolysis of CuCl2 in response to irradiation with visible light. This catalysis proceeds via a ligand to metal charge transfer process and provides an exciting opportunity for the synthesis of 1,2‐dichloride compounds using an inexpensive, low‐molecular‐weight chlorine source. This new process exhibits a wide
摘要这项工作展示了基于 CuCl 均裂的烯烃光氧化还原邻位二氯化反应2响应可见光照射。这种催化通过配体到金属的电荷转移过程进行,并为使用廉价的低分子量氯源合成 1,2-二氯化合物提供了令人兴奋的机会。这种新工艺表现出广泛的底物范围、优异的官能团耐受性、极其温和的条件并且不需要外部配体。机理研究表明,氯原子自由基的快速形成是该合成过程中 C−Cl 键易于形成的原因。