Reaktion an Ziegler‐Natta‐Katalysatoren, 14. Anwendung der Olefin‐Metathese zum Nachweis einer Grignard‐Wurtz‐reaktion an hydrobromiertem 1,4‐Polybutadien

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Abstract
1,4‐Polybutadiene was partially hydrobrominated in the presence of AlBr3. A Grignard‐Wurtz‐reaction with phenylmagnesium bromide resulted in an exchange of the bromine atoms for phenyl groups. The polymers were degraded in an olefin metathesis reaction with 4‐octene using a WCl6/Sn(CH3)4 catalyst. The low molecular degradation products with bromine or phenyl substituents, resp., were separated by gas chromatography and identified by mass spectrometry.