Divergent C–H Oxidative Radical Functionalization of Olefins to Install Tertiary Alkyl Motifs Enabled by Copper Catalysis
作者:Ming-Qing Tian、Cong Wang、Xu-Hong Hu、Teck-Peng Loh
DOI:10.1021/acs.orglett.9b00142
日期:2019.3.15
An efficient tertiary alkylation reaction of olefins with 1,3-dicarbonyl compounds was developed by virtue of copper catalyst without the use of expensive ligands or additives. In contrast to alkyl Heck-type reaction, alkyl halide is not required. Notably, by varying the nitrogen and air atmosphere, the reaction selectively produces alkylation and alkylation–oxygenation products, respectively. Initial
利用铜催化剂开发了烯烃与1,3-二羰基化合物的有效叔烷基化反应,而无需使用昂贵的配体或添加剂。与烷基赫克型反应相反,不需要烷基卤化物。值得注意的是,通过改变氮气和空气气氛,该反应分别选择性地产生烷基化和烷基化-氧化产物。初步研究表明,α-羰基烷基自由基可能与该过程有关。