On the Preparation of Substituted 4H-1,3,4-Thiadiazolo[2,3-c]-1,2,4-triazin-4-ones and 1,2,4-Triazolo[3,4-b]-1,3,4-thiadiazoles

Article abstract of DOI:10.1002/jhet.5570340443

The reaction of benzoyl isothiocyanates and methoxycarbonyl isothiocyanate with 4-amino-4,5-dihydro-3-(methylthio)-1,2,4-triazin-5-ones in acetonitrile gave several substituted 4H-1,3,4-thiadiazolo[2,3-c]-1,2,4-triazin-4-ones VIa-h instead of the expected