2-(2-羟基苯基)-5-氨基-2H-苯并三唑的合成研究

Study on Synthesis of 2-(2-hydroxyphenyl)-5-amino-2H-benzotriazole

2 (2 羟基苯基) 5 氨基 2H 苯并三唑是新型活性紫外线吸收剂的又一个重要中间体.以邻氨基酚和间苯二胺为原料,经重氮化、偶合、环化制备2 (2 羟基苯基) 5 氨基 2H 苯并三唑化合物,产率为80%.研究重氮化反应及偶合反应的影响因素,得出适宜的反应条件.

2-(2-Hydroxyphenyl)5amino2Hbenzotriazole was an important intermediate for new reactive UV absorbers. The title compound was prepared from \%o\%aminophenol and \%m\%phenylenediamine by diazotisation, coupling reaction and closure, yield was 80 %. The factors influencing on diazotisation and coupling reaction were studied and the optimum reaction conditions were obtained.