Free-radical arylations of arenes with arylhydrazines and arylboronic acids

Free-radical arylations of arenes with arylhydrazines and arylboronic acids 

Additonal improvement has been introduced by using the arylboronic acids as aryl radical precursors. Arylboronic acids are reacted with anhydrous manganese(III) acetate (3 eq.) in refluxing liquid arene, e.g. benzene, thiophene, or furan, to give 

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