PROCESS FOR PRODUCING 5-AMINOPYRAZOLE DERIVATIVE, AND AZO DYE
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United States of America Patent
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Issued Date -
Mar 11, 2010
app pub date -
Nov 9, 2007
filing date -
Nov 10, 2006
priority date (Note) -
Abandoned
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Abstract
A process for producing a 5-aminopyrazole derivative represented by Formula (I) includes a step of reacting a hydrazine compound represented by Formula (II) with a compound represented by Formula (III) under a condition satisfying Reaction Condition 1 and Reaction Condition 2, wherein Reaction Condition 1 is that the reaction is conducted in a reaction solvent containing water, and Reaction Condition 2 is that pH of a liquid mixture containing the hydrazine compound represented by Formula (II), the compound represented by Formula (III), the reaction solvent, and an acidifying agent upon charging is within a range of from 2.0 to 4.0 at 25.degree. C.: ##STR00001## wherein the symbols in the formulae (I) to (III) are defined in the specification.
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