化学英语汉译英,机译免进

来源:百度知道 编辑:UC知道 时间:2024/07/07 21:08:02
研究苯并三唑类紫外线吸收剂的合成方法及其性质。
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。
收率为65%。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,无环境污染。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。

Research benzothriazole class ultraviolet ray absorbent synthetic method and nature.
Used under the low temperature the diazo-reaction, the coupling reaction, the electronation reaction synthesized 2- (2 ' - hydroxyl - 5 ' - methyl benzyl) the benzothriazole.
Receiving rate is 65_.And with IR, the mass spectrum and so on has carried on the attribute.
This kind of synthetic method cost is low, simplicity of operator, non-environmental pollution.The synthesis compound has the intense absorption in 270~ 380nm, but does not have any absorption in 400~ 700nm, is kind of performance fine ultraviolet ray absorbent.