Patent ID: 8618326

Claim:
A method for making 2-substituted-1,4-benzenediamine comprising: (a) introducing ammonia to a 4-nitro-2-(or 3-)substituted-chlorobenzene to obtain a 4-nitro-2-(or 3-)substituted-aminobenzene: (b) hydrogenating the 4-nitro-2-(or 3-) substituted-aminobenzene in the presence of an hydrogenation catalyst to form a 2-substituted-1,4-benzenediamine: wherein X of formulae (I)-(III)) is selected from the group consisting of: (a) a branched alkyl; (b) methoxy, ethoxy, propoxy, isopropoxy, butoxy; (c) C1-C6 alkyl or branched alkyl with hydroxy substitution; (d) â€”(CH2)yOCH3; wherein y is from 1-3; (e) â€”(CH2)yOCH2CH3; wherein y is from 1-3; (f) â€”(CH2)yOCH2CH2CH3; wherein y is from 1-3; wherein Z is hydrogen or C1-3 alkyl; and (h) mixtures thereof.