摘要
介绍了C.I.溶剂黄44的新型合成方法。以4-溴-1,8-萘酐为原料,用2,4-二甲基苯胺在醋酸中与之反应得到N-2′,4′-二甲基苯基-4-溴-1,8-萘酰亚胺(NDNA),然后将NDNA在高压下用氨水进行氨解得到最终产品。总收率大于70%。对影响反应的主要因素(反应温度、反应时间以及氨水与NDNA的投料比)进行了研究,得到了较好的条件。
New methods of preparing C.I. Solvent Yellow 44 were discussed. N-2＇,4＇-Dimethyl-phenyl-4-bromo-1,8-naphthalimine （ND-NA） was obtained through reacting 4-bromo-1,8-naphthalenic anhydride with 2,4-dimethylamiline in acetic. The final product is generated by ammonolysis of the compound under high pressure. The yield reached more than 70%. The main factors including the temperature of reaction, the time of reaction and the rate of ammonia and NDNA were investigated. The optimal condition of reaction was found.
出处
《染料与染色》
CAS
2008年第1期11-13,共3页
Dyestuffs and Coloration
