and 7-substituted-benzo[a] [1,4]benzothiazino[3,2-a]phenothiazine derivatives were prepared by the condensation of 2,3,6-trisubstituted-1,4-naphthoquinones with 2-aminothiophenol. The resulting compounds were subjected to reduction, dehalogenation and condensation with aniline. Some of the condensation intermediates were isolated and the reaction mechanism was also investigated.
2,6-二取代-,3,6-二取代-5 H-苯并[ a ]
吩噻嗪-5-酮衍
生物和7-取代-苯并[ a ] [1,4]苯并
噻嗪并[3,2- a ]
吩噻嗪通过将2,3,6-三取代-
1,4-萘醌与2-
氨基
苯硫酚缩合制备衍
生物。将所得化合物进行还原,脱卤和与
苯胺的缩合。分离了一些缩合中间体,并研究了反应机理。