Patent ID: 9216945
Filing Date: 2015-12-22
Classification: C07C

Abstract:
1. A method for making 2-substituted-1,4-benzenediamine comprising: (a) introducing an ether forming agent to a 4-nitro-2- (or 3-) haloalkyl substituted chlorobenzene resulting in the 4-nitro-2 (or 3-) substituted-chlorobenzene: (b) introducing ammonia to a 4-nitro-2- (or 3-)substituted-chlorobenzene to obtain a 4-nitro- (c) 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  and mixtures thereof, wherein the halogen is F, Cl or Br; wherein Y of YOH represents an alkyl moiety of C1-C3; wherein the base is selected from suitable alkali alkoxides, alkali hydroxides, and mixtures thereof; and wherein X of formulae (I)-(III)) is selected from the group consisting of: