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| A,C-Bridged Calix[6]arene： Relationship between the Length of Bridge and Conformation | |
| 引用本文： | 龚淑玲 陈义坤 李俊 段和平 陈远荫. A,C-Bridged Calix[6]arene： Relationship between the Length of Bridge and Conformation[J]. 中国化学, 2004, 22(6): 573-576. DOI: 10.1002/cjoc.20040220616 |
| 作者姓名： | 龚淑玲 陈义坤 李俊 段和平 陈远荫 |
| 作者单位： | CollegeofChemistryandMolecularScience,WuhanUniversity,Wuhan,Hubei430072,China |
| 基金项目： | Project supported by the National Natural Science Foundation of China (No. 20272044). |
| 摘 要： | Three new A,C-diamide bridged p-tert-butylcalix[6]arenes were synthesized from p-tert-butylcalix[6]arenes by bridging ClCH2CONH(CH2)nNHCOCH2Cl(n=3,4,6) in acetonitrile using K2CO3 as a base in 17%-25% yields.It was found that the bridged calix[6]arenes with shorter bridges (n=2,3,4 in N′,N′-bischloroacetodiamines) adopt cone conformation, but the last one (n=6) adopts alternate conformation, i.e., accompanying the lengthening of bridge, the conformation of A,C-bridged calix[6]arenes changes from cone to alternate. |
| 关 键 词： | 杯[6]芳烃 A C-联氨桥 合成 构造 |
A,C-Bridged Calix[6]arene: Relationship between the Length of Bridge and Conformation |
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| GONG,Shu-Ling CHEN,Yi-Kun LI,Jun. A,C-Bridged Calix[6]arene: Relationship between the Length of Bridge and Conformation[J]. Chinese Journal of Chemistry, 2004, 22(6): 573-576. DOI: 10.1002/cjoc.20040220616 | |
| Authors: | GONG Shu-Ling CHEN Yi-Kun LI Jun |
| Abstract: | Three new A,C‐diamide bridged p‐tert‐butylcalix[6]arenes were synthesized from p‐tert‐butylcalix[6]arenes by bridging ClCH2CONH(CH2)nNHCOCH2Cl (n=3, 4, 6) in acetonitrile using K2CO3 as a base in 17%‐25% yields. It was found that the bridged calix[6]arenes with shorter bridges (n=2, 3, 4 in N', N'‐bischloroacetodiamines) adopt cone conformation, but the last one (n=6) adopts alternate conformation, i.e., accompanying the lengthening of bridge, the conformation of A,C‐bridged calix[6]arenes changes from cone to alternate. |
| Keywords: | calixarene calix[6]arene conformation bridging diamide bridge |
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