【作者】 郝会雷；

【导师】 姜日善；

【作者基本信息】 延边大学 ， 有机化学， 2009， 硕士

【摘要】 二苯甲酮类化合物具有特殊的光化学性质,其在紫外线吸收剂、光引发剂、医药工业与电子工业等领域有广泛应用。本文拟在通过文献查阅和综合相关资料比较,采用两种方法合成2,4-二硝基二苯甲酮并通过对反应条件的摸索——原料配比、催化剂用量、反应温度、反应时间等因素的比较,设计正交试验对反应条件进行优化和摸索,以便找出最佳的反应条件和分离方法。从而获得纯度和产率较高的产品,然后在此基础上进行还原反应和烃基化反应合成七种在国内尚未见文献报道的新型二苯甲酮类衍生物。本文合成的化合物在240～400nm范围内比紫外线吸收剂UV-9和UV-531有更好的紫外吸收效率,并且热稳定性也有了很大提高。另外对于产物结构的鉴定,我们采用NMR、ESI-MS、FT-IR等分析手段分别对产物结构进行了归属和验证。最后,将合成产物分别与聚乙烯熔融共混后制成薄膜并测试了紫外吸收性能,发现薄膜制品的紫外吸收性能与目标化合物相比基本无变化,证明目标化合物对聚乙烯制品可以起到光稳定作用,为光稳定剂的设计合成及应用提供了理论的依据及实际的可行性。更多还原

【Abstract】 Benzophenone derivatives,which have good photoehemistry properties, are commonly applied in the area of Ultra-violet absorbers, photoinitiators, medicinal, electronic industry and so on.In this paper, two methods of synthesis of 2,4-dinitrobenzophenone were seleiced compared literature with relevant information available, and we designed orthogonal experiment to optimize and explore the reaction conditions in order to identify the best reaction condition and separation methods. Through the exploration of reaction conditions - the ratio of raw materials, the amount of catalyst, reaction temperature, reaction time, etc. Then, we can obtain a higher purity and yield of the product, upon which reduction and alkylation reaction were carried out to synthesize seven new benzophenone derivatives never reported at home.In this paper, the compounds synthesized have better efficiency than UV-9 and UV-531 UV absorbers in the range of 240～400 nm, and their thermal stability has also been greatly improved.In addition, we used NMR, ESI-MS, FT-IR and other analytical tools to identify structure of attribution and authentication. Finally, we made our products and polyethylene melt to prepare films and tested the ultraviolet receptivity, then discovered that films’ UV absorption were almost same with the target compound, which proved the target compound played an important role of the stabilization of polyethylene product and applied the theoretical basis and practical feasibility for designing the light stabilizers.更多还原