RESEARCH IN THE CHEMISTRY OF HETEROCYCLIC QUINONEIMINES. 3.* OXIDATIVE CYCLIZATION OF 2,5-DIARYLAMINO-SUBSTITUTED 1,4-BENZOQUINONE-4-PHENYLIMINES - SIMPLE METHOD FOR THE PREPARATION OF 2-ARYLAMINO-5-ARYL-PHENAZONINES

Article abstract of DOI:10.1007/BF00515634

2,5-Diarylamino-1,4-benzoquinone-4-phenylimines, which are formed in the reaction of 1,4-benzoquinone-4-phenylimine with aromatic amines, are converted under oxidative conditions to products of intramolecular oxidative cyclization, viz., 2-arylamino-5-aryl-3-phenazinones.