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Wiley, ChemPhysChem, 8(9), p. 1107-1109, 2008

DOI: 10.1002/cphc.200800065

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Regioselective H/D Exchange at the Side-Chain of Ethylbenzene on Dealuminated Zeolite H-Y Studied by In Situ MAS NMR–UV/Vis Spectroscopy

Journal article published in 2008 by Jun Huang ORCID, V. R. Reddy Marthala, Yijiao Jiang, V. R. Reddy Marthala, Yean Sang Ooi, Michael Hunger
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This paper is available in a repository.

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Abstract

Regioselective H/D exchange at the side-chain methyl group of ethylbenzene on dealuminated zeolite H-Y and formation of carbenium ions are observed for the first time by the novel in situ pulsed-flow 1H MAS NMR-UV/Vis technique. Hydride abstraction on Lewis acid sites lead to the formation carbenium ions which are protonated following Markovnikov's rule (see scheme).