Preparation method of ultraviolet light absorber UV-1600 intermediate
The invention provides a preparation method of an ultraviolet light absorber UV-1600 intermediate, and particularly relates to a preparation method of the ultraviolet light absorber UV-1600 intermediate, namely 2,4-bis(4-xenyl)-6-(2,4-dyhydroxy)phenyl-1,3,5-triazine. The method comprises the steps:...
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| creator | BAO PENGCHENG SUN DONGHUI HUANG YU FAN XIAOPENG GUAN BO TIAN JUN BI ZUOPENG LI HAIPING ZHANG HUIJING SUN CHUNGUANG XIONG CHANGWU |
| description | The invention provides a preparation method of an ultraviolet light absorber UV-1600 intermediate, and particularly relates to a preparation method of the ultraviolet light absorber UV-1600 intermediate, namely 2,4-bis(4-xenyl)-6-(2,4-dyhydroxy)phenyl-1,3,5-triazine. The method comprises the steps: a Friedel-Crafts alkylation reaction is conducted by taking cyanuric chloride and biphenyl as raw materials, taking aluminum trichloride as a catalyst, and taking HCl gas as a cocatalyst, 2,4-bis(4-xenyl)-6-chlorine-1,3,5-triazine is obtained, then the 2,4-bis(4-xenyl)-6-chlorine-1,3,5-triazine andresorcinol generate a Friedel-Crafts reaction, and the target product is obtained. According to the preparation method of the ultraviolet light absorber UV-1600 intermediate, the HCl gas is taken as the cocatalyst, thus the catalytic activity of a catalytic system is greatly improved, the yield of the product can be greatly increased, and a new process route is provided for industrial production of UV-1600.
本发明提供一种紫外线吸收剂U |
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本发明提供一种紫外线吸收剂U</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY |
| title | Preparation method of ultraviolet light absorber UV-1600 intermediate |
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