Cobalt-Promoted Electroreductive Cross-Coupling of Prop-2-yn-1-yl Acetates with Chloro(vinyl)silanes
作者:Chong-Hui Xu、Zhi-Qiang Xiong、Jing-Hao Qin、Xin-Hua Xu、Jin-Heng Li
DOI:10.1021/acs.orglett.3c02989
日期:2023.10.6
An electroreductive cross-coupling of prop-2-yn-1-yl acetates with chloro(vinyl)silanes for producing tetrasubstituted silylallenes is developed. The method enables the formation of a new C─Si bond through the cathodic reduction formation of the silyl radical, radical addition across the C≡C bond, the alkenyl anion intermediate formation, and deacetoxylation and represents a mild, practical route to
开发了乙酸丙-2-炔-1-基酯与氯(乙烯基)硅烷的电还原交叉偶联,用于生产四取代的硅基丙二烯。该方法通过甲硅烷基自由基的阴极还原形成、C−C 键上的自由基加成、烯基阴离子中间体的形成以及脱乙酰氧基化,能够形成新的 C─Si 键,并且代表了一种温和、实用的合成路线甲硅烷基丙二烯。机理研究表明CoCl 2作为介体通过电子转移促进烯基阴离子中间体的形成。