Rhodium(III)-Catalyzed C–C Coupling of Arenes with 2-Vinyloxiranes: Synthesis of Allylic Alcohols
作者:Songjie Yu、Xingwei Li
DOI:10.1021/ol5000764
日期:2014.2.21
A rhodium(III)-catalyzed C–C coupling between 2-vinyloxiranes and arenes directed by different chelating groups has been realized via a C–Hactivation pathway. This reaction proceeded under conditions with a low catalyst loading, and allylic alcohols were isolated as the coupling products. A series of benzoazepanes has been synthesized by following this coupling.
Mechanochemical conditions have been applied to a highly efficient cobalt(III)-catalyzed C–H bond activation for the first time. In a subsequent step to the olefin insertion and β-oxygen elimination, N-pyrimidinylindoles were allylated with vinylethylene carbonates in the absence of organic solvent under high-speed ball-milling condition. As the reaction afforded the desired products in up to 98% yields