… and thiosemicarbazones: New syntheses of substituted 2, 4??dihydro??1, 2, 4??triazol??3??ones, 2, 4??dihydro??1, 2, 4??triazole??3??thiones and 2??amino??1, 3, 4??oxadiazoles

R Milcent, TH Nguyen

Index: Milcent, Rene; Nguyen, Thu-Huong Journal of Heterocyclic Chemistry, 1986 , vol. 23, # 3 p. 881 - 883

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Citation Number: 18

Abstract

Abstract Treatment of various substituted semicarbazones of aromatic aldehydes with sulfur monochloride yields the corresponding substituted 2, 4-dihydro-1, 2, 4-triazol-3-ones. With thiosemicarbazones, the products are derivatives either of the 2-amino-1, 3, 4 thiadiazole or of the 2, 4-dihydro-1, 2, 4-triazole-3-thione depending on the experimental conditions.