Electrochemical Borylation of Alkyl Halides: Fast, Scalable Access to Alkyl Boronic Esters
作者:Bingbing Wang、Pan Peng、Wan Ma、Zhao Liu、Cheng Huang、Yangmin Cao、Ping Hu、Xiaotian Qi、Qingquan Lu
DOI:10.1021/jacs.1c06473
日期:2021.8.25
Herein, a fast, scalable, and transition-metal-free borylation of alkyl halides (X = I, Br, Cl) enabled by electroreduction is reported. This process provides an efficient and practical access to primary, secondary, and tertiary boronic esters at a high current. More than 70 examples, including the late-stage borylation of natural products and drug derivatives, are furnished at room temperature, thereby
本文报道了一种通过电还原实现的烷基卤化物(X = I,Br,Cl)的快速、可扩展且无过渡金属的硼化反应。该过程提供了在高电流下有效且实用地获得伯、仲和叔硼酸酯的途径。在室温下提供了 70 多个例子,包括天然产物和药物衍生物的后期硼酸化,从而证明了该协议的广泛效用和功能组耐受性。机理研究表明,B 2 cat 2作为试剂和阴极介质,能够在低电位下对难以还原的烷基溴或氯化物进行电还原。