Synthesis and metal ion sorption by proton-ionizable, acyclic and cyclic polyether resins

Date

1994-12

Journal Title

Journal ISSN

Volume Title

Publisher

Texas Tech University

Abstract

In 1967 Pedersen published the first of four fundamental papers on the synthesis and properties of macrocyclic polyether compounds. 1 "4 This class of compounds was discovered by accident during the preparation of bis-(<9-hydroxyphenoxy)ethyl ether (1) by reaction of bis chloroethyl) ether with the sodium salt of o-hydroxyphenoxytetrahydropyran followed by acid hydrolysis. Along with the anticipated product 1, Pedersen isolated a small quantity of a by-product. Investigation into the structure of the byproduct identified the compound as macrocyclic polyether 2 which was formed by the cyclic condensation of 2 moles of unprotected catechol, a small amount of which was present in the reactant, with 2 moles of bis(chloroethyl) ether.

Description

Keywords

Crown ethers, Ion exchange resins, Gums and resins

Citation