Structure and Reactivity of the Magnesium Alkyl–2-Alkoxyethanol System as an Initiator for Styrene Polymerization

Abstract

The structure and reactivity of dialkylmagnesium–2-alkoxyethanol system as an initiator for styrene polymerization were studied. Dialkylmagnesium coupled with an equimolar quantity of 2-alkoxyethanol was found to initiate styrene polymerization, although the use of dialkylmagnesium alone could not induce polymerization. Metalation reaction of fluorene and addition reaction to 1, 1-diphenylethylene were possible with dialkylmagnesium–2-alkoxyethanol system. Measurements of the electronic spectra of these carbanion solutions indicated that coordination-agentseparated ion pairs were produced in the system. The colorless prism crystal, which was formed in di-n-butylmagnesium–2-methoxyethanol system, was found to possess a composition such as n-C4H9MgOCH2OCH3·OCH3·Mg(OCH2CH2OCH3)2. This complex exhibited high reactivity for styrene polymerization.

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Narita, T., Yasumura, T. & Tsuruta, T. Structure and Reactivity of the Magnesium Alkyl–2-Alkoxyethanol System as an Initiator for Styrene Polymerization. Polym J 4, 421–425 (1973). https://doi.org/10.1295/polymj.4.421

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Keywords

  • Polymerization
  • Styrene
  • Dialkylmagnesium
  • 2-Methoxyethanol
  • Tetrahydrofurfuryl Alcohol
  • Fluorene
  • 1, 1-Diphenylethylene
  • Coordination-Agent-Separated Ion Pair

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