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Study of regioselective dialkylation of naphthalene in the presence of reusable zeolite catalysts

Smith, Keith, Roberts, Simon D. and El-Hiti, Gamal A. 2003. Study of regioselective dialkylation of naphthalene in the presence of reusable zeolite catalysts. Organic & Biomolecular Chemistry 1 (9) , pp. 1552-1559. 10.1039/b212775j

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Abstract

Highly regioselective dialkylation of naphthalene using various alkylating agents can be achieved over zeolite catalysts. For example, the tert-butylation of naphthalene (1) using tert-butanol in cyclohexane over a dealuminated H-Mordenite (HM) zeolite has been optimised to give a 60% yield of 2,6-di-tert-butylnaphthalene (3) with a 2,6/2,7 ratio of over 50. This has been achieved by varying the reaction time, temperature, solvent, pressure, amount of tert-butanol, solvent and catalyst, Si/Al ratio of the catalyst, and the mode of addition. The zeolites can be easily regenerated by heating and reused.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
ISSN: 14770539
Date of First Compliant Deposit: 30 March 2016
Last Modified: 04 Jun 2017 01:40
URI: http://orca.cf.ac.uk/id/eprint/1483

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