CHEMISTRY OF HETEROCYCLIC QUINONIMINES. 6. DIRECT AMINATION OF BENZOPHENONTHIAZIN-5-ONE WITH AROMATIC AMINES

Article abstract of DOI:10.1007/BF00505896

The reaction of benzophenothiazin-5-one with aromatic amines proceeds under mineral acid activation of the substrate to generate 6-arylamino derivatives exclusively.N-Alkylanilines give, in addition to the corresponding 6-N-alkyl-N-arylaminobenzophenothiazin-5-ones, the dealkylation product, namely 6-anilinobenzophenothiazin-5-one.