@article{Hell_Korecz_Békássy_2018, title={Spectroscopic Evidence for the Involvement of a Radical Intermediate in the Friedel-Crafts Benzylation Using Ion-Exchanged K10 Catalysts}, volume={62}, url={https://pp.bme.hu/ch/article/view/12842}, DOI={10.3311/PPch.12842}, abstractNote={<p>For Friedel-Crafts alkylation of aromatic hydrocarbons an ionic reaction path is considered as classical reaction mechanism. The&nbsp;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&nbsp;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.</p>}, number={4}, journal={Periodica Polytechnica Chemical Engineering}, author={Hell, Zoltán and Korecz, László and Békássy, Sándor}, year={2018}, pages={497–502} }