Authors Komber, H. ; Steinert, V.
Title Isomerisation of Erythro- and Threo-Succinyl Units in Alternating Alkene-Maleic Acid Copolymers : A Promising Route to New Microstructures
Date 25.11.2004
Number 12663
Abstract <B>Summary:</B> A first route to the isomerisation of <I>erythro</I>- and <I>threo</I>-2,3-disubstituted succinyl units in alternating alkene-maleic acid copolymers is presented. The isomerisation reactions of the disodium salt of ethene-maleic acid copolymer were carried out in aqueous solution at 180-240&nbsp;°C in an autoclave. It is demonstrated that the <I>erythro</I>-content can be changed from 17% up to 67%. The dissociation of methine C<IMGSRC="/giflibrary/12/bond.gif"BORDER="0">H bonds with the intermediate formation of a sp<SUP>2</SUP> hybridised carbon is proposed as the mechanism.
Publisher Macromolecular Rapid Communications
Citation Macromolecular Rapid Communications 26 (2004) 168-171

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