Ammonium ion binding with pyridine-containing crown ethers

被引：50

作者：

Chang, T

Heiss, AM

Cantrill, SJ

Fyfe, MCT

Pease, AR

Rowan, SJ

Stoddart, JF

White, AJP

Williams, DJ

机构：

[1] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

[2] Univ London Imperial Coll Sci Technol & Med, Dept Chem, Chem Crystallog Lab, London SW7 2AY, England

来源：

ORGANIC LETTERS | 2000年 / 2卷 / 19期

关键词：

D O I：

10.1021/ol0061889

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

[GRAPHICS] Dipyrido[24]crown-8 (DP24C8) has been synthesized and shown to form [2]pseudorotaxanes spontaneously with dibenzylammonium ions. These complexes, which have been demonstrated by H-1 NMR spectroscopy to form faster in solution than when the macrocyclic polyether is dibenzo[24]crown-8 (DB24C8), are also stronger than their DB24C8 counterparts. One of the [2]pseudorotaxanes has been used to construct a [2]rotaxane (see above) comprising a dumbbell-shaped component based on a dibenzylammonium ion which is encircled by a DP24C8 macrocycle and terminated by (triphenylphosphonium)methyl stoppers.

引用

页码：2947 / 2950

页数：4

共 15 条

[1]

Ashton PR, 1998, ANGEW CHEM INT EDIT, V37, P1294, DOI 10.1002/(SICI)1521-3773(19980518)37:9<1294::AID-ANIE1294>3.0.CO

[2]

2-F

[3] Secondary dibenzylammonium ion binding by [24]crown-8 and [25]crown-8 macrocycles [J].