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Bildung von Cyclopentenylverbindungen beim Metathese-Abbau von modifiziertem 1,4-Polybutadien

✍ Scribed by Hummel, Klaus ;Heiling, Peter ;Karaoulis, Christos ;Kathan, Wolfgang ;Stelzer, Franz


Publisher
Wiley (John Wiley & Sons)
Year
1980
Weight
621 KB
Volume
181
Category
Article
ISSN
0025-116X

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✦ Synopsis


Abstract

This investigation deals with metathesis degradation products of modified 1,4‐polybutadiene (poly(1‐butenylene)) which have not been taken into consideration as yet, e.g. substituted cyclopentene and linear isomerization products. Substituents were introduced into 1,4‐poly‐butadiene either by partial bromination with N‐bromosuccinimide followed by a Grignard‐Wurtz reaction or by reaction with the corresponding methyl compound and dicumyl peroxide. Polymers with 2‐methylbenzyl, 4‐methylbenzyl, 4‐chlorobenzyl, 4‐methoxybenzyl, 2‐naphthylmethyl, 2,4,6‐trimethylphenyl, 1‐naphthyl, 9‐anthryl, and 9‐phenanthryl substituents were degraded by metathesis with 4‐octene using WCl~6~/(CH~3~)~4~Sn as a catalyst and were analyzed by gas chromatography/mass spectrometry and by liquid chromatography.


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