一种均三嗪类紫外线吸收剂UV-1577的合成及表征

以溴苯、镁粉和三聚氯氰为原料，经过格氏反应，合成了2－氯-4，6－二（2’，4’－二苯基）－1，3,5－均三嗪（Ⅰ），化合物Ⅰ在无水三氯化铝作用下再与间苯二酚发生Friedel-Craft反应，得到了2－（2’，4’－二羟基苯）-4，6-二（2″,4″-二苯基）-1，3，5-均三嗪（Ⅱ），化合物Ⅱ在碱性条件下与1-氯正己烷缩合得到紫外线吸收剂UV－1577，即2－（2L羟基－4’－己氧基苯基）－4，6－二苯基－1，3，5－均三嗪，总收率为32．6％。同时讨论了反应温度、反应时间及反应物摩尔比对反应产物收率的影响；并对紫外线吸收剂UV-1577及其中间体用IR、^1HNMR进行了结构表征，对UV－1577的紫外线吸收性能作了初步的分析。

Synthesis and Characterization of s-triazine UV-1577 Ultraviolet Absorber

Magnesium,bromobenzene and cyanuric chloride were used as raw materials to synthesize 2- chloro-4,6-bis（2＇ ,4＇-diphenyl）-1,3,5-s-triazine （ Ⅰ ） via Grignard reaction. Ⅰ reacted with resorcinol in presence of anhydrous AlCl3 to obtain 2-（2＇,4＇-dihydroxyphenyl）-4,6-bis（2＂,4＂-diphenyl）-s-triazine （Ⅱ）, which was subjected to condense with 1-chlorohexane（Ⅲ） to prepare the s-triazine ultraviolet absorber 2-2＇- hydroxy-4＇-hexyloxyphenyl]-4,6-bis（2＂,4＂-diphenyl）-s-triazine （Ⅳ） in total yield of 32.6%. The influences of reaction temperature, reaction time and mole ratio of reactants on the yield of product also had been researched. The structures of target compound and intermediates were characterized by IR and ^1HNMR. The UV absorption properties of UV-1577 was also analysed.