Method for direct preparation for 1,2,4-triazole from hydrazine

Details Method for direct preparation for 1,2,4-triazole from hydrazine Method for direct preparation for 1,2,4-triazole from hydrazine

1979-11-07

1981-05-12

Rollins, Alton D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D24908

Patent

active

042673470

ABSTRACT:
Process for the preparation of 1,2,4-triazole comprises contacting hydrazine or its aqueous solutions with at least about 2.5 moles of formamide at a temperature of 140.degree. to 210.degree. C. and then recovering the resultant 1,2,4-triazole in yields of 92-98% with 94-98% purity. The formamide is maintained in an excess over about the 2.5 molar amount consumed in the reaction with the hydrazine. Recovery steps for isolating the 1,2,4-triazole are disclosed.

REFERENCES:
Kirk-Othmer, Encyclopedia of Chemical Technology, 2nd Edition, vol. 10, p. 104, (John Wiley, N.Y., 1966).

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