Unusual cone conformation retention in calix[4]arenes

被引：23

作者：

Creaven, BS ^{[1
]}

Deasy, M

Gallagher, JF

McGinley, J

Murray, BA

机构：

[1] Inst Technol, Dept Appl Sci, Dublin 24, Ireland

[2] Inst Technol, Natl Ctr Sensor Res, Dublin 24, Ireland

[3] Dublin City Univ, Sch Chem Sci, Dublin 9, Ireland

来源：

TETRAHEDRON | 2001年 / 57卷 / 42期

关键词：

calixarenes; X-ray crystal structure; conformation; nuclear magnetic resonance;

D O I：

10.1016/S0040-4020(01)00872-9

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Use of a regioselective O-alkylation, C-dealkylation synthetic sequence generates an 'ABAB' calix[4]arene, 4, which contains only two upper rim t-butyl groups and yet retains the cone conformation. Further substitutions can then be carried out independently on the upper and/or lower rims of the A and/or B subunits, with retention of conformation. Complexation studies show that 4 retains its cone conformation in the presence of alkali metals from sodium to cesium. Thus 4 remains in the cone conformation in solid state, in solution and on complexation. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

收藏

页码：8883 / 8887

页数：5

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