A simple, effective, and selective synthesis route without template effect (part II) for [2+2] difunctional 28-membered macrocyclic ethers based on benzoxazine dimers and its inclusion phenomena with metal ions

被引：16

作者：

Chirachanchai, S ^{[1
]}

Phongtamrug, S ^{[1
]}

Laobuthee, A ^{[1
]}

机构：

[1] Chulalongkorn Univ, Petr & Petrochem Coll, Bangkok 10330, Thailand

来源：

CHEMISTRY LETTERS | 2003年 / 32卷 / 05期

关键词：

D O I：

10.1246/cl.2003.432

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A macrocyclic ether produced from benzoxazine dimers and ditosylated diethylene glycols is a model to show that the cyclization occurs when intramolecular hydrogen bond of benzoxazine dimer is eliminated in the strong basic condition via a selective [2 + 2] pathway without metal template effect. Macrocyclic ethers perform inclusion phenomena at host-guest stoichiometric ratios of 1:1, and 2:1 depending on the type of metal ion, as clarified by UV and H-1 NMR.

引用

页码：432 / 433

页数：2

共 9 条

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