Method for synthesizing diamine compound and method for synthesizing polyimide compound using diamine compound synthesized by this method

摘要

To provide a novel method for synthesizing a diamine compound capable of synthesizing a polyimide compound having high solubility in an organic solvent and melt moldability. SOLUTION: This compound is obtained by reacting a 4-nitrobenzoic acid derivative such as 4-nitrobenzoyl chloride and a 4-nitrophenol derivative such as 2-hydroxy-5-nitrobiphenyl and then reducing the nitro group of the reaction, 1) A process for synthesizing a diamine compound. Further reacting the dian compound with an acid anhydride to synthesize a polyamic acid. (R 1 to R 8 are each independently H, F, a substituted / unsubstituted alkyl group or a substituted / unsubstituted aromatic group; at least one of R 1 to R 8 is a substituted / unsubstituted aromatic group) None