Preparation of triazolone compounds
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United States of America Patent
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Jun 16, 1998
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May 11, 1995
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Nov 13, 1992
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Abstract
Preparation of a 1,2,4-triazol-3-one compound substituted in positions 4 and 5 by an alkyl or aryl group and, optionally, in position 2 by an alkyl group, by reacting an ester a of carbamic acid N-substituted by an alkyl or aryl group with a hydrazide of an aliphatic or aromatic carboxylic acid, optionally N-substituted by an alkyl group, in the presence of a strong base.
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