Process for the production of 1,2,4-triazol-5-one

Details Process for the production of 1,2,4-triazol-5-one Process for the production of 1,2,4-triazol-5-one

1990-08-27

1991-08-13

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D24912

Patent

active

050398164

ABSTRACT:
A process for producing chloride ion-free 1,2,4-triazol-5-one which comprises: a) heating a mixture of hydrazodicarbonamide and formic acid to a reflux temperature for said mixture, b) refluxing said mixture at said reflux temperature for a time sufficient to cause said mixture to change its visual appearance from a cloudy mixture to a clear solution, and c) removing unreacted formic acid from said clear solution to provide the desired 1,2,4-triazol-5-one product free of chloride ion.

REFERENCES:
patent: 4482738 (1984-11-01), Rothgery
patent: 4733610 (1988-03-01), Lee et al.

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