Preparation of hydroxylammonium salts of 5-nitro-1,2,4-triazol-3

Details Preparation of hydroxylammonium salts of 5-nitro-1,2,4-triazol-3 Preparation of hydroxylammonium salts of 5-nitro-1,2,4-triazol-3

1993-08-25

1995-04-11

Miller, Edward A.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

149 92, C07D24912

Patent

active

054059712

ABSTRACT:
The present invention relates to a novel compound which is the hydroxylammonium or lower alkyl hydroxylammonium salt of 3-nitro-1,2,4-triazol-5-one, together with processes for preparation thereof. One process comprises a two-step reaction comprising: (a) reacting 3-nitro-1,2,4-triazol-5-one with an aqueous alkali metal or alkaline earth metal hydroxide to form an aqueous solution of an alkali metal or alkaline earth metal salt of 3-nitro-1,2,4-triazol-5-one, and (b) reacting said alkali metal or alkaline earth metal salt of 3-nitro-1,2,4-triazol-5-one with an aqueous solution of hydroxylammonium salt or lower alkyl-substituted hydroxylammonium salt to form the hydroxylammonium salt of 3-nitro-1,2,4-triazol-5-one. Another process comprises (a) reacting an aqueous solution of a hydroxylammonium salt or lower alkyl-substituted hydroxylammonium salt with an alkali metal or alkaline earth metal hydroxide to form an aqueous solution of a hydroxylamine free base and (b) reacting said free base with an aqueous solution or slurry of 3-nitro-1,2,4-triazol-5-one at a temperature of between about 5.degree. C. and about 50.degree. C. and at atmospheric pressure.

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