Abstract
Cationic cyclopolymerization of 1,2-bis[2-(2-vinyloxyethoxy)ethoxy]benzene (1) via a long-lived intermediate was achieved by the hydrogen iodide/iodine (HI/I2) initiating system to give poly(benzo-19-crown-6). The molecular weight distribution of the polymer obtained was relatively narrow as Mw/Mn≤1.4 in dichloromethane at −60 and −72°C. The degree of polymerization agreed with the predicted value for the [1]/[HI] ratio below 10. The poly(crown ether) with a reactive end group could be prepared through the polymerization of 1 initiated with I2 and the hydroiodinated adduct of a monovinyl ether; i.e., a dimethylmethoxysilyl-capped polymer from dimethylmethoxy[4-(2-vinyloxyethoxy)phenyl]silane and a macromonomer from 2-vinyloxyethyl methacrylate.
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Kakuchi, T., Kobayashi, O., Nakaya, D. et al. Synthesis of Some Tailor-Made Poly(benzo-19-crown-6)s via Cyclopolymerization of Divinyl Ether with Hydrogen Iodide/Iodine Initiator. Polym J 21, 649–653 (1989). https://doi.org/10.1295/polymj.21.649
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DOI: https://doi.org/10.1295/polymj.21.649
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