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 C
Four 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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
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
