γ-环糊精控制的2-氰基萘的光二聚反应  

Photodimerization of 2-Naphthalenecarbonitrile inγ-Cyclodextrin Aqueous Solution

作　　者：廖桂红[1] 佟振合[1] 吴骊珠[1] 

机构地区：[1]中国科学院理化技术研究所光化学转换与功能材料重点实验室,北京100190

出　　处：《影像科学与光化学》2008年第6期433-437,共5页Imaging Science and Photochemistry

基　　金：国家自然科学基金项目(20732007;20728506;20672122);科技部国家重点基础研究发展规划(2006CB806105;2007CB808004;2007CB936001);中科院基础局资助项目

摘　　要：最新的研究发现2-氰基萘(CN)能够发生光二聚反应生成3种类立方烷结构的二聚体,anti-head-to-head 1、anti-head-to-tail 2和syn-head-to-tail 3.本文研究了水溶液中γ-环糊精对2-氰基萘的光二聚反应区域选择性的影响.结果表明,γ-环糊精(γ-CD)能够显著影响2-氰基萘的光二聚反应,在提高反应速率的同时,得到较好的区域选择性,室温下光照CN@γ-CD包结物水溶液,主要得到头-头产物1.The development of highly selective and efficient photochemical reactions is one of the fundamental challenges in organic synthesis. Our recent studies reveal that irradiation of 2-naph- thalenecarbonitrile in organic solution with a light λ 〉280 nm results in the formation of three rigid cubane-like photodirners, anti-head-to-head 1, anti-head-to-tail 2 and syn-head-to-tail 3. In the present work, γ-cyclodextrin was used to direct the photodimerization of 2-naphthalenecarbonitrile. The results demonstrate that in the presence of γ-CD, the photodimerization takes place efficiently and regioselectively. The anti-head-to-head dimer 1 was obtained as the main product, while no products were detected by HPLC in host-free aqueous solution.

关 键 词：Γ-环糊精 2-氰基萘 光二聚反应 区域选择性 

分 类 号：O644.1[理学—物理化学]