Synthesis and solid state structural analysis of conformers of tetrakis((ethoxycarbonyl)methoxy)tetrathiacalix[4]arene

被引：81

作者：

Akdas, H

Mislin, G

Graf, E

Hosseini, MW

De Cian, A

Fischer, J

机构：

[1] Univ Strasbourg, Chim Coordinat Organ Lab, CNRS, F-67000 Strasbourg, France

[2] Univ Strasbourg, Lab Cristallochim & Chim Struct, CNRS, F-67000 Strasbourg, France

来源：

TETRAHEDRON LETTERS | 1999年 / 40卷 / 11期

关键词：

D O I：

10.1016/S0040-4039(99)00143-4

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The role of alkaline metal cations in the synthesis and in determining the conformer distribution of tetrakis((ethoxycarbonyl)methoxy)tetrathiacalix[4]arene obtained by treatment of tetrathiacalix[4]arene 1 in acetone by ethyl bromoacetate in the presence of M2CO3 was systematically investigated. Among the four possible conformers, the cone, partial cone and 1,3-alternate conformers were obtained, purified and structurally characterised by X-ray analysis in the solid state. Although for Li+ no tetra substituted derivative was observed, for Na+ the cone conformer was exclusively formed while for both K+ and Cs+ a mixture of partial cone and 1,3-alternate conformers was obtained. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：2113 / 2116

页数：4

共 17 条

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