2-氯-4,6-二硝基间苯二酚合成工艺研究

Study on Synthetic Technology of 2-Chloro-4,6-dinitroresorcinol

文章采用1,2,3-三氯苯为起始原料对合成PBO纤维单体4,6-二氨基间苯二酚的重要中间体2-氯-4,6-二硝基间苯二酚的合成方法进行了研究,并采用红外光谱法和氢核磁共振法对4,6-二硝基-1,2,3-三氯苯和2-氯-4,6-二硝基间苯二酚的结构进行了表征;采用正交试验法对4,6-二硝基-1,2,3-三氯苯碱性水解合成2-氯-4,6-二硝基间苯二酚的合成工艺进行了研究,确定了最佳工艺条件,在此条件下得到2-氯-4,6-二硝基间苯二酚的收率为95.3%。

2-chloro-4,6-dinitroresorcinol, which was an important intermediate to synthesize 4,6-diaminoresorcinol, the monomer of PBO fiber, was synthesized with 1,2,3-trichlorobenzene as the start material. FT-IR and IH NMR was used to analyze the structure of 4,6-dinitro-l,2,3-trichlorobenzene and 2-chloro-4,6-dinitroresorcinol. Orthogonal test was used to study the synthetic technology of 2-chloro-4,6-dinitroresorcinol which was synthesized by hydrolysis from 4,6-dinitro-1,2,3-trichlorobenzene. The yield of 2-chloro-4,6-dinitroresorcinol under the optimized conditions were 95.3 %.