N-phenylcarbazole-containing dianhydride compound and synthesis method thereof

The invention discloses aN-phenylcarbazole structure containing dianhydride compound and a preparation method thereof. The structure of the dianhydride compound is shown. The method comprises dissolving N-phenylcarbazole-2, 2 ', 3, 3'-tetracarboxylic acid in an organic solvent such as acetic acid and acetic anhydride, heating to reflux and preserving heat for 5-10 hours under the catalysis of a silicon-based solid dehydrating agent SH-01 in an oxygen-free environment to obtain a corresponding dianhydride compound N-phenylcarbazole-2, 2 ', 3, 3'-dianhydride with an N-phenylcarbazole structure, carrying out filtering and recrystallizing after the reaction is finished. It is ensured that that omega II after purification is greater than 99% and the reaction yield is greater than 70%. The compound can be used for synthesizing polyimide materials. 本发明公开了一种含N-苯基咔唑结构的二酐化合物及其制备方法，该化合物的结构为：，将N-苯基咔唑-2,2',3,3'-四羧酸溶于乙酸、乙酸酐等有机溶剂中，在硅基固体脱水剂SH-01催化下，于无氧环境下，加热至回流保温5~10h，得到相应的N-苯基咔唑结构的二酐化合物N-苯基咔唑-2,2',3,3'-二酐，反应完后，经过滤、重结晶，其经纯化ω