Synthesis of Phthalides through Tandem Rhodium-Catalyzed C-H Olefination and Annulation of Benzamides
作者:Neeraj Kumar Mishra、Jihye Park、Miji Choi、Satyasheel Sharma、Hyeim Jo、Taejoo Jeong、Sangil Han、Saegun Kim、In Su Kim
DOI:10.1002/ejoc.201600368
日期:2016.6
The rhodium(III)-catalyzed tandem C–H olefination and cyclization of benzamides with various alkenes is described. This protocol provides direct access to highly substituted phthalides, which are known as crucial frameworks of biologically active compounds. In particular, the amide directing group containing a benzimidazole group facilitates the activation of aromatic ortho-C–H bonds leading to olefination