Copper-Catalyzed Cross-Nucleophile Coupling of β-Allenyl Silanes with Tertiary C–H Bonds: A Radical Approach to Branched 1,3-Dienes
作者:Qi-Chao Shan、Lu-Min Hu、Wei Qin、Xu-Hong Hu
DOI:10.1021/acs.orglett.1c02112
日期:2021.8.6
3-dienes through oxidative coupling of two nucleophilic substrates, β-allenyl silanes, and hydrocarbons appending latent functionality by copper catalysis. Notably, C(sp3)–H dienylation proceeded in a regiospecific manner, even in the presence of competitive C–H bonds that are capable of occurring hydrogen atom transfer process, such as those located at benzylic and other tertiary sites, or adjacent to an
本文描述了一种独特的方法,通过两种亲核底物、β-烯基硅烷和附加潜在官能团的烃的氧化偶联,通过铜催化制备支链 1,3-二烯。值得注意的是,C(SP 3)-H dienylation以区域专一性方式进行,即使是在竞争性C-H键,其能够发生氢原子转移过程,如那些位于苄等第三位点或邻近存在一个氧原子。对照实验支持官能化烷基的中间体。