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Metal-Free Photocatalyzed Cross Coupling of Bromoheteroarenes with Pyrroles

Marzo, Leyre ; Ghosh, Indrajit ; Esteban, Francisco ; König, Burkhard



Abstract

The excited radical anion of rhodamine 6G reduces heteroaryl bromides and chlorides to generate heteroaryl radicals that were successively trapped by pyrroles for the synthesis of heteroaromatic biaryls in moderate to excellent yields. The synthetically important photoredox catalytic C-H heteroarylation reaction works for a broad range of brominated electron-rich heteroarenes and chlorinated ...

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