CAJ | 학술논문

系统地研究了用于制备高分子新单体2,5-二氨基-6-羟基苯并咪唑（DAHBI）的关键中间体5-甲氧基-4-硝基邻苯二胺（MNPDA）的合成,获得了IR和MS定性合格的目标产物。结果表明：以1,5-二氯-2,4-二硝基苯（DCDNB）为原料经单氨解和醇解二步反应先制得5-甲氧基-2,4-二硝基苯胺（MDNA）,再经多硫化钠选择还原合成MNPDA的路线,经工艺优化后,可获得纯度为98.9%,总收率42.2%的MNPDA。为结构改性高聚物的创新研发与性能研究提供物质基础。
계통지연구료용우제비고분자신단체2,5-이안기-6-간기분병미서（DAHBI）적관건중간체5-갑양기-4-초기린분이알（MNPDA）적합성,획득료IR화MS정성합격적목표산물。결과표명：이1,5-이록-2,4-이초기분（DCDNB）위원료경단안해화순해이보반응선제득5-갑양기-2,4-이초기분알（MDNA）,재경다류화납선택환원합성MNPDA적로선,경공예우화후,가획득순도위98.9%,총수솔42.2%적MNPDA。위결구개성고취물적창신연발여성능연구제공물질기출。
Novel synthesis of 5-methoxy-4-nitro-1,2-phenylenediamine(MNPDA),a key intermediate for preparing polymer monomers 2,5-diamino-6-hydroxy benzimidazole(DAHBI),was systematically studied,target product was obtained and confirmed by IR and MS.The results showed that: the synthesis route of MNPDA included two step reaction of preparing 5-methoxy-2,4-dinitroaniline(MDNA) by mono-ammonolysis and alcoholysis from 1,5-dichloro-2,4-dinitrobenzene(DCDNB),and selective reduction reaction of the MDNA using sodium sulfide.After the process optimization,prepared MNPDA has the purity above 98.9 % and the total yield of 42.2 %,which provided material basis for the innovation research and performance studies of molecular structure modified polymers.