Abstract
The radical telomerization of methyl methacrylate (MMA) was carried out at 50—90°C using bromotrichloromethane (BTCM) as a chain transfer agent, and the n[MMA]:[BTCM] adducts, that is, the n-mers, where, n=1—3, were separated by silica-gel column chromatography. The tacticities of two dimers and three trimers were estimated by 1H NMR spectroscopy. Syndiotactic diastereoisomers were formed preferentially, and no isotactic trimer was found. The most stable conformations of the syndiotactic- and isotactic-dimers were presumed from the results of induced reactions.
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Kimura, T., Kodaira, T. & Hamashima, M. Separation and Structure of Methyl Methacrylate Telomers Synthesized in the Presence of Bromotrichloromethane. Polym J 15, 293–301 (1983). https://doi.org/10.1295/polymj.15.293
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DOI: https://doi.org/10.1295/polymj.15.293