Spectroscopic evidence for the involvement of a radical intermediate in the friedel-crafts Benzylation using ion-exchanged K10 catalysts

Zoltán Hell, László Korecz, Sándor Békássy

Research output: Contribution to journalArticle

Abstract

For Friedel-Crafts alkylation of aromatic hydrocarbons an ionic reaction path is considered as classical reaction mechanism. The alkylation with benzyl chloride in the presence of ion-exchanged K10 montmorillonite catalysts containing multivalent, reducible cations had an outstanding activity, therefore a radical initial step as a supplement to the ionic mechanism was proposed earlier. We made ESR investigations to clarify the existence and the nature of the suggested radical species. The ESR experiments verified that the reaction involves a radical step.

Original languageEnglish
Pages (from-to)497-502
Number of pages6
JournalPeriodica Polytechnica Chemical Engineering
Volume62
Issue number4
DOIs
Publication statusPublished - Nov 20 2018

Keywords

  • Benzylation
  • ESR spectroscopy
  • Friedel-crafts alkylation
  • Radical step

ASJC Scopus subject areas

  • Chemical Engineering(all)

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