Heterocyclic Communications p. 311 - 314 (2007)
Update date:2022-08-04
Topics:
Amin, Amir H.
Bakherad, Mohammad
1,4-dioxo-3,4-dihydro-2(1H)phtalazinecarbothiohydrazide 3 was initially synthesized by reaction of phtalic anhydride with thiocarbohydrazide. Compounds 4a-e with the novel heterocyclic ring system of 4-substituted-1-thioxo-1,2- dihydro[1,2,4,5]tetraazino[1,2-b]phtalazine-6,11-dione were subsequently synthesized by cyclocondensation of 3 with trimethyl orthoformate, trimethyl orthoacetate, benzoic anhydride, cyanogen bromide and carbon disulfide, respectively.
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