Dual-role catalysis of iridium in photo-irradiation synthesis of 9-fluorenone through intramolecular cyclization via hydrogen evolution

Abstract

A photoredox catalyzed synthesis of 9-fluorenone from [1,1'-biphenyl]-2-carboxylic acid with 2-arylbenzo[d]oxazolyl based iridium complexes as dual-purpose catalysts has been developed. An unusual hydrogen evolution accompanying the formation of the 9-fluorenone...