Concepedia

Synthesis of 4‐(pyrazol‐5‐yl)‐1,2,4‐triazole‐3‐thiones

Chiara Beatrice Vicentini, Maurizio Manfrini, Augusto C. Veronese, Mario Guarneri

Journal of Heterocyclic Chemistry · 1998 · 29 citations · 12 references

DOI

Concepts

Abstract

Abstract Condensation of pyrazolyl isothiocyanates 2 with N ‐substituted hydrazines provided the 2‐methyl/phenyl‐4‐(pyrazol‐5‐yl)thiosemicarbazides 3 . Cyclization of 3 with formic acid‐acetic anhydride or with triethyl orthoacetate‐acetic anhydride provided 4‐(pyrazol‐5‐yl)‐l,2,4‐triazole‐3‐thiones 4a‐f and 5‐methyl‐4‐(pyrazol‐5‐yl)‐1,2,4‐triazole‐3‐thiones 4g‐I respectively.

References

12

The Reaction of Malononitrile with Substituted Hydrazines: New Routes to 4-Aminopyrazolo[3,4-d]pyrimidines<sup>1,2</sup>

Edward C. Taylor, Klaus Hartke · Journal of the American Chemical Society · 1959 · 70 citations

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A synthetic entry to isoxazolo[5,4‐<i>d</i>]pyrimidine‐4(5<i>H</i>)thione and isothiazolo[4,3‐<i>d</i>]isoxazole

Chiara Beatrice Vicentini, A. C. VERONESE, Tiziana Poli et al. · Journal of Heterocyclic Chemistry · 1990 · 37 citations

, , +8

A new general and efficient synthesis of imidazo[4,5-c]pyrazole derivatives

Chiara Beatrice Vicentini, Augusto C. Veronese, P. Giori et al. · Tetrahedron · 1990 · 21 citations

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Synthesis and activity optimization of herbicidal substituted 4-aryl-1,2,4-triazole-5(1H)-thiones

Kirk A. Simmons, John A. Dixson, Blaik P. Halling et al. · Journal of Agricultural and Food Chemistry · 1992 · 19 citations

, , +11

Synthesis and in‐vitro antifungal activity of 6‐trifluoromethyipyrazolo[3,4‐6<i>d</i>]pyrimidin‐4(5<i>H</i>)‐thiones

Chiara Beatrice Vicentini, Tiziana Poli, Augusto C. Veronese et al. · Pesticide Science · 1989 · 17 citations

, , +15