and with dimethyl acetylenedicarboxylate gave intermediates, which were thermally cyclized to give 4,10-dihydro-4,10-dioxo-1H[1]benzothiopyrano[3,2-b]pyridinecarboxylates. 3-Formyl-thiochromone was condensed with o-phenylenediamine to give 7-oxo-7,13-dihydro[1]benzothiopyrano[2,3-b]-1,5-benzodiazepine.
通过使3-溴-
硫代色素-4-酮与
叠氮化
钠在
甲醇-
水中反应,可轻松制得3-
氨基-4 H -1-苯并
噻喃-4-酮(
3-氨基噻吩酮)。3-
氨基
硫代
色酮与
乙氧基亚甲基丙二酸二乙酯和乙酰二
羧酸二甲酯缩合,得到中间体,将其热环化得到4,10-二氢-4,10-dioxo-1 H [1]苯并
硫代
吡喃并[3,2- b ]
吡啶羧酸酯。将3-甲酰基-
硫代
色酮与
邻苯二胺缩合,得到7-氧代-7,13-二氢[1]苯并
硫代
吡喃并[2,3 - b ] -1,5-苯并二氮杂。