Rhodium(III)-catalyzed C-H activation mediated synthesis of isoquinolones from amides and cyclopropenes

摘要

We have developed a synthesis of 4-substituted isoquinolones from the rhodium(III)-catalyzed, C-H activation mediated coupling of O-pivaloyl benzhydroxamic acids and 3,3-disubstituted cyclopropenes. Experiments suggest the formation of a [4.1.0] bicyclic system, which can open under acidic conditions to generate the desired isoquinolone.