Rh(III)‐Catalyzed Distal C‐H Alkenylation of Weakly Coordinating Acetamides Via Desilylation Pathway
作者:Vinay Bapu Ramesh、Nachimuthu Muniraj、Kandikere Ramaiah Prabhu
DOI:10.1002/adsc.201900307
日期:2019.8.21
Rh(III)‐Catalyzed distal ortho‐C−H alkenylation of arylacetamides have been reported employing acetamide, a weak coordinating group, as a directing group. This challenging C−H alkenylation of arylacetamides has been achieved by using arylalkynyl silanes as a surrogate for terminal alkynes under redox neutral process through desilylation pathway. The control experiments suggest that the in situ generatedRh‐species
据报道,Rh(III)催化的芳基乙酰胺的远端邻-C-H链烯基化反应使用弱配位基团乙酰胺作为指导基团。通过使用芳基炔基硅烷作为末端炔烃的替代物,通过去甲硅烷基化反应在氧化还原中性过程中实现了芳基乙酰胺的这一具有挑战性的CH H烯基化。对照实验表明,原位生成的Rh物种可能是路易斯酸性的,这在去甲硅烷基化步骤中起着至关重要的作用。