Synthesis, Characterization and Microwave-Promoted Catalytic Activity of Novel N-phenylbenzimidazolium Salts in Heck-Mizoroki and Suzuki-Miyaura Cross-Coupling Reactions under Mild Conditions
Synthesis, Characterization and Microwave-Promoted Catalytic Activity of Novel N-phenylbenzimidazolium Salts in Heck-Mizoroki and Suzuki-Miyaura Cross-Coupling Reactions under Mild Conditions
A simple Ni(II)-catalyzed C–H hydroarylation of diarylacetylenes with imidazolium salts without adding any ligand was developed. It provides a facile and efficient access to (E)-2-(1,2-diarylvinyl)imidazolium salts. The preliminary results indicate a rare nonredox catalytic cycle of Ni(II), complementary to the common redox catalytic cycle starting from Ni(0).
开发了一种简单的 Ni( II ) 催化的二芳基乙炔与咪唑盐的 C-H 加氢芳基化,无需添加任何配体。它提供了一种简便有效的获得 ( E )-2-(1,2-二芳基乙烯基)咪唑盐的途径。初步结果表明 Ni( II ) 的罕见非氧化还原催化循环与从 Ni(0) 开始的常见氧化还原催化循环互补。