Process for the preparation of 4-amino-1,2,4-triazole

Details Process for the preparation of 4-amino-1,2,4-triazole Process for the preparation of 4-amino-1,2,4-triazole

1997-11-06

2000-03-21

Morris, Patricia L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D24908

Patent

active

060404566

ABSTRACT:
The present invention relates to a process for the preparation of products of formula (1): ##STR1## in which R denotes H or an alkyl group containing from 1 to 10 carbon atoms, it being possible for this alkyl group to be substituted by one or more aryl, heteroaryl, hydroxyl or alkenyl groups, in which process hydrazine is reacted with a deficiency of carboxylic acid RCOOH and then the water of reaction and optionally the water of dilution of the hydrazine and of the acid is removed.
It is particularly useful for preparing 4-amino-1,2,4-triazole.

REFERENCES:
patent: 5099028 (1992-03-01), Goe et al.
Nasu et al., "Preparation of 4-Amino-1,2,4-triazole," CA 118: 124567 (1992).
Cram and Hammond, "Organic Chemistry", McGraw Hill Book Co., NY (1964) 2nd. Edition. pp. 565-567.
"Studies on the Formation of 4-Aminotriazole Derivatives from Acyl Hydrazides", Robert M. Herbst, et al., Journal of Organic Chemistry 18: pp. 872-877 (Jul. 1953).
Chemical Abstracts No. 9197g, Kost, et al., "Reactions of Hydrazine Derivatives. XIX. Condensations of 4-amino-1,2,4-triazole with Esters", vol. 53, No. 10, (May 25, 1959).
"Catalogue Handbook of Fine Chemicals", product A8, 180-3, Aldrich, p. 97 (1994).

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