METHOD FOR MANUFACTURING DIAMINE COMPOUND

摘要

PROBLEM TO BE SOLVED: To efficiently manufacture 4-aminobenzenesulfonic acid 4-aminophenyl ester.SOLUTION: In the provided method for manufacturing 4-aminobenzenesulfonic acid 4-aminophenyl ester, 4-nitrobenzenesulfonic acid chloride and 4-nitrophenol are reacted within a non-protonic polar solvent in the presence of a base, and, following crystallization, the obtained 4-nitrobenzenesulfonic acid 4-nitrophenyl ester is reduced.