1986
DOI: 10.1002/jhet.5570230343
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Reactions of sulfur monochloride with some aromatic aldehyde semicarbazones 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

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.

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Cited by 19 publications
(4 citation statements)
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“…starting with nitriles, 22,23 imidates, 24 N 1 -acyl-semicarbazides, 25 N 1 -tosyl-amidrazones, 26 or aldehyde-semicarbazones. 27 C-Glycosyl-1,2,4-triazol-5-ones could not be located in the literature. The only related work found was that of Poonian and Nowoswiat 28 reporting the transformation of β-D-ribofuranosyl formimidate by (thio)semicarbazide to the corresponding C-β-D-ribofuranosyl-N 1 -(thio)carbamoyl formamidrazones.…”
Section: Resultsmentioning
confidence: 96%
“…starting with nitriles, 22,23 imidates, 24 N 1 -acyl-semicarbazides, 25 N 1 -tosyl-amidrazones, 26 or aldehyde-semicarbazones. 27 C-Glycosyl-1,2,4-triazol-5-ones could not be located in the literature. The only related work found was that of Poonian and Nowoswiat 28 reporting the transformation of β-D-ribofuranosyl formimidate by (thio)semicarbazide to the corresponding C-β-D-ribofuranosyl-N 1 -(thio)carbamoyl formamidrazones.…”
Section: Resultsmentioning
confidence: 96%
“…Растворитель -DMSO-D 6 , внутренний стандарт ТМС. Масс-спектры ЖХ/МС записаны на сис-теме, включающей жидкостной хроматограф Agilent 1100 Series и масс-спектрометр Agilent Technologies LC/MSD VL (с химической ионизацией), ELSD Sedex 75.…”
Section: экспериментальная частьunclassified
“…Это окислительная циклизация семикарбазидов арилальдегидов (1) [6,7], а также щелочная циклизация ацилсемикарбазидов (2) (схема 1) [8,9]. …”
unclassified
“…There have been numerous reports concerning the development of synthetic methods for construction of triazolinones, the majority of which involve intramolecular cyclocondensation of formyl semicarbazides [8,9], condensation of an amidrazone with phosgene or a phosgene surrogate [10][11][12][13], the Mitsunobu reaction of isocyanates and diisopropyl azodicarboxylate [14], cyclization of semicarbazide [15][16][17] and intramolecular cyclocondensation of hydrazidehydrazones [18]. This work describes a one pot synthesis of substituted triazolinones via a three-component reaction of aldehydes, hydrazines and azodicarboxylates using trifluoroacetic acid (TFA) as catalyst.…”
mentioning
confidence: 99%