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Komber, H. ; Steinert, V.
Isomerisation of Erythro- and Threo-Succinyl Units in Alternating Alkene-Maleic Acid Copolymers : A Promising Route to New Microstructures

Summary: A first route to the isomerisation of erythro- and threo-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 °C in an autoclave. It is demonstrated that the erythro-content can be changed from 17% up to 67%. The dissociation of methine CH bonds with the intermediate formation of a sp2 hybridised carbon is proposed as the mechanism.

Quelle
Macromolecular Rapid Communications 26

Seiten
168-171

DOI
http://dx.doi.org/10.1002/marc.200400520

Erschienen am
November 2004
 
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