Journal
LETTERS IN ORGANIC CHEMISTRY
Volume 19, Issue 9, Pages 683-688Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/1570178619666220111110352
Keywords
Aldehydes; guanidine hydrochloride; water; 1; 2; 4-trizolodine-3-thiones; synthesis; catalyst
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Funding
- Chhatrapati Shahu Maharaj Research Training and Human Development Institute (SARTHI), Pune, India
- TEQIP-III
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A rapid and efficient method for the synthesis of 1, 2, 4-triazolidine-3-thiones derivatives using water as a solvent and a small amount of guanidine hydrochloride as a catalyst has been developed. The method shows advantages such as short reaction time, high yield, easy work-up, and broad scope of substrate tolerance. Additionally, the catalyst can be recycled without significant loss of its catalytic activity.
A rapid and highly efficient methodology for the synthesis of 1, 2, 4-triazolidine-3-thiones derivatives has been developed in the presence of a catalytic amount of guanidine hydrochloride using water as a solvent. The reaction of thiosemicarbazide with different aryl aldehydes resulted in the formation of title compounds in good yields (85-95%) with a convenient reaction time (20-30 min). The key advantages of this approach include shorter reaction time, energy efficiency, easy work-up procedure, and wide substrate scope tolerance. Furthermore, the catalyst was recycled without significant loss of its catalytic activity.
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