带有四个不同芳基的环丁烷的合成、结构及光化学性质  

Synthesis, Structure and Photochemical Properties of Cyclobutanes Containing Four Different Aryl Groups

作　　者：庄俊鹏[1] 张文勤[1] 

机构地区：[1]天津大学化学系,天津300072

出　　处：《高等学校化学学报》2004年第4期659-662,共4页Chemical Journal of Chinese Universities

基　　金：教育部骨干教师基金 ( 2 0 0 0年 )资助

摘　　要：通过不同杂芳基乙烯分子间的交叉光二聚反应在硫酸溶液中和中压汞灯照射下 ,合成了 4种含 7个不同取代芳基的环丁烷衍生物 .用紫外和红外光谱及1H和 13 CFour cyclobutane derivatives, rctt-1-(2-benzoxazolyl)-2-(4-chlorophenyl)-3-(4-pyridinyl) -4-phenylcyclobutane, rctt-1-(2-benzoxazolyl)-2-phenyl-3-(4-pyridinyl)-4-(4-chlorophenyl)cyclo-butane, rctt-1-(2-benzoxazolyl)-2-(4-chlorophenyl)-3-[2-(5-phenyloxazolyl)]-4-phenylcyclobutane and rctt-1-(2-benzoxazolyl)-2-phenyl-3-[2-(5-phenyloxazolyl)]-4-(4-chlorophenyl)cyclobutane, containing four different aryl groups, were synthesized by the cross-photodimerization reactions of different heteroarylethene monomers in sulfuric acid solution upon the irradiation of medium-pressure mercury lamp. Three photodimers were detected in the reaction, two of them were the photodimer of the monomer itself and the other was the cross-photodimer. The photolysis of the cross-photodimer upon the irradiation of low-pressure mercury lamp was carried out in dilute methanol solution and the reactions were traced by UV and HPLC. It was found that the cross-photodimer photolysized into trans-monomers at first, which were then converted to cis-monomers by trans-cis isomerization.

关 键 词：芳基 环丁烷 合成 结构 光化学性质 顺式头尾相对型二聚体 交叉光二聚反应 杂芳基乙烯 苯并噁唑 

分 类 号：O624.11[理学—有机化学]