Process for low chloride 1,2,4-triazol-5-one

Details Process for low chloride 1,2,4-triazol-5-one Process for low chloride 1,2,4-triazol-5-one

1987-09-28

1991-03-12

Chaudhuri, Olik

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D24908

Patent

active

049994344

ABSTRACT:
A process for producing 1,2,4-triazol-5-one comprises reacting a semicarbazide compound with a formic acid compound formylating agent in the presence of a catalytic amount of a sulfur-oxygen containing acid.
The process is able to produce 1,2,4-triazol-5-one from semicarbazide hydrochloride having significantly lower concentrations of chloride ion, which is advantageous, for example, in the production of 3-nitro-1,2,4-triazol-5-one as an explosive used in castable explosive compositions.

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