Regioselective Decarboxylative Direct C-H Arylation of Boron Dipyrromethenes (BODIPYs) at 2,6-Positions: A Facile Access to a Diversity-Oriented BODIPY Library

A palladium-catalyzed regioselective decarboxylative direct C-H arylation of boron dipyrromethenes (BODIPYs) at the 2,6-positions has been developed as a late-stage approach to rapidly assemble a diversity-oriented BODIPY library. With the complement of this protocol, the direct C-H arylation of BODIPYs becomes regiocontrollable at alpha- and beta-positions. A new type of indole-fused BODIPY exhibiting bright red/NIR fluorescence with a large molar extinction coefficient (145 500 M-1 cm(-1)) and a high quantum yield (71%) has been synthesized for the first time.