REACTION OF SECONDARY AROMATIC AMINES WITH MANGANESE(III) ACETATE.

Article abstract of DOI:10.1246/bcsj.56.1682

The reaction of 2-(methylamino)benzophenone with manganese(III) acetate afforded 5- left bracket o-benzoylanilino)-methyl right bracket -2-(methylamino)benzophenone, 2-aminobenzophenone, 5-formyl-2-(methylamino)benzophenone, 2-amino-5- left bracket (o-benzoylanilino)methyl right bracket benzophenone, 2-formamidobenzophenone, 2-amino-5-formylbenzophenone, and 2-(N-methylformamido)benzophenone. It was found that the reaction did not cause oxidative cyclization, but dimerization and conversion of N-methyl into N-formyl groups. Characterization of the products, the detailed oxidation mechanism, and the effects of the additives are discussed.