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The penultimate unit effect of radical copolymerization

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Summary

The effect of polar β- and γ-substituents on the selectivity of alkyl radical additions to alkenes has been measured. Although these substituents don't influence the nucleophilicity of radicals they reduce the rate of addition to diethyl fumarate. It is concluded that the penultimate unit effect is a through space repulsive interaction of polar substituents between the radicals and the alkenes.

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Authors and Affiliations

  1. Institut für Organische Chemie und Biochemie, Technische Hochschule Darmstadt, Petersenstraße 22, 6100, Darmstadt, Germany

    B. Giese & R. Engelbrecht

Authors
  1. B. Giese
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  2. R. Engelbrecht
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Giese, B., Engelbrecht, R. The penultimate unit effect of radical copolymerization. Polymer Bulletin 12, 55–58 (1984). https://doi.org/10.1007/BF00258272

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  • DOI: https://doi.org/10.1007/BF00258272

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