Single Pot Benzylation of O-Xylene with Benzyl Chloride and Benzyl Alcohol Over Pillared Montmorillonites

• Authors: Manju Kurian , S. Sugunan
• Languages of publication: EN

Abstracts

EN

Improvement of product selectivity is a major concern of the day. Presence of a coreactant can alter the rate as well as product selectivity of many key reactions like Friedel-Crafts benzylation. Single pot benzylation of o-xylene with benzyl chloride and benzyl alcohol was studied over transition metal exchanged pillared clay catalysts. Complete conversion of benzyl alcohol occured within one hour with 100% monoalkylated product selectivity. The reaction of o-xylene with benzyl alcohol was found to proceed fast in presence of benzyl chloride in single pot, than when present alone as the benzylating species. This enhancement occurs at the expense of no reaction of benzyl chloride, which when present alone reacts faster than benzyl alcohol. Existence of a second transition metal exchanged between the pillars increased the rate of the reaction. A detailed investigation of the reaction variables suggested preferential adsorption of benzyl alcohol to catalyst active sites as the reason.

Keywords

EN

Friedel-Crafts benzylation; single pot benzylation; pillared clays

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2014
• Volume: 16
• Issue: 3
• Pages: 69-73

Dates

published

1 - 9 - 2014

online

3 - 10 - 2014

Contributors

author

Manju Kurian

• Mar Athanasius College, Department of Chemistry, Kothamangalam, India- 686666,

author

S. Sugunan

• Cochin University of Science and Technology, Department of Applied Chemistry, Kerala, India

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Identifiers

DOI

10.2478/pjct-2014-0053