PROCESS FOR PRODUCING 5-AMINOPYRAZOLE DERIVATIVE, AND AZO DYE

摘要

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° C.: wherein the symbols in the formulae (I) to (III) are defined in the specification.