An acid-catalyzed reaction of 3-(2-aminophenylamino)-5,5-dimethylcyclohexen-1-one with isatines leads to the formation of the earlier undescribed 3,3-dimethyl-2,3,4,5,10,11-hexahydrospiro[1H-dibenzo[b,e][1,4]diazepine-11,3′-2H-indole]-1,2′-dione derivatives (6). Spiranes 6 upon heating undergo auto-redox rearrangement with disintegration to 3,3-dimethyl-1,2,3,4-tetrahydrophenazine and the corresponding oxindole. Crystals of four derivatives of compound 6 were studied by X-ray diffraction method.
3-(2-
氨基苯基
氨基)-5,5-二甲基
环己烯-1-酮与异
吲哚的酸催化反应导致形成早先未被描述的3,3-二甲基-2,3,4,5,10,11-六氢螺[1H-二苯并[b,e][1,4]二氮杂烯-11,3′-
2H-吲哚]-1,2′-二酮衍
生物(6)。螺烷6在加热后发生自氧还原重排,并分解为3,3-二甲基-1,2,3,4-四氢苯酸和相应的氧
吲哚。对化合物6的四种衍
生物的晶体进行了X射线衍射研究。