Preparation of 4-amino-1,2,4-triazol-5-ones
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United States of America Patent
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Aug 28, 1990
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N/A
app pub date -
Dec 15, 1988
filing date -
Dec 22, 1987
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Expired
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Abstract
A process for the preparation of 4-amino-1,2,4-triazol-5-one of the formula ##STR1## in which R is alkyl, comprising in a first step reacting phosgene with an acylhydrazide of the formula ##STR2## to produce an oxadiazolinone of the formula ##STR3## and in a second step reacting the oxadiazolinone with hydrazine hydrate.
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