【摘要】 采用在低温下重氮化反应、偶合反应、还原反应合成了2-(2’-羟基?5’-甲基苯基)苯并三唑.并用IR、质谱等进行了表征.这种合成方法成本较低、操作简单、反应迅速.合成的化合物在270~380nm内有强烈吸收,而在400~700nm内无任何吸收,是一类性能优良的紫外线吸收剂.更多还原

【Abstract】 2-(2’-hydroxy-5’-methylphenyl) benzotriazole was prepared by the reaction methods of diazotization,coupling and reduction in low temperature.The compound was characterized by infrared spectrum and mass spectrum.The main advantages of this method are low cost and rapid reaction rate.The compound has a strong ability to absorb ultraviolet in 270-380 nm,but has no absorption to the light rays in 400-700 nm.It is a good ultraviolet absorber.更多还原