Add time:07/12/2019         Source:sciencedirect.com

SNAr reaction between N-(4,5-dichloro-2-nitrophenyl)acetamide and 4-hydroxybenzoic acid gives 4-(5-acetylamino-2-chloro-4-nitro- phenoxy)benzoic acid and 4-{5-[(5-acetylamino-2-chloro-4-nitrophenyl)amino]-2-chloro-4-nitrophenoxy}benzoic acid which were used for the synthesis of new AB-type monomers for polybenzimidazoles.

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