Shape-Selective Alkylation of 2-Methoxynaphthalene with tert-Butanol over Large-Pore Zeolites

doi:10.1023/A:1015472812322

Paper

Shape-Selective Alkylation of 2-Methoxynaphthalene with tert-Butanol over Large-Pore Zeolites

Published Jun 1, 2002 · N. Srinivas, A. Singh, A. V. Ramaswamy

Catalysis Letters

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Abstract

The selective formation of 6-tert-butyl-2-methoxynaphthalene is reported for the first time in the liquid phase alkylation of 2-methoxynaphthalene with tert-butanol over large-pore zeolites (maximum of 96% selectivity over H-MOR at 65% conversion). Over H-Y, which has been shown to be the most efficient catalyst in such a reaction in terms of activity, the main secondary reactions are the dialkylation, leading to bulky di-tert-butyl-2-methoxynaphthalene derivatives, and the demethylation of the methoxy group, giving mono- and di-tert-butyl derivatives of naphthol.

Study Snapshot

Selective formation of 6-tert-butyl-2-methoxynaphthalene can be achieved through liquid phase alkylation of 2-methoxynaphthalene with tert-butanol over large-pore zeolites, with H-Y being the most efficient catalyst.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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Paper

Shape-Selective Alkylation of 2-Methoxynaphthalene with tert-Butanol over Large-Pore Zeolites

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References

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Titanium and zirconium containing molecular sieves effectively catalyze the alkylation of 2-methoxynaphthalene with propylene oxide, producing various alkylated products with high conversion and selectivities.

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Acetylation of 2-methoxynaphthalene with acetic anhydride over a HBEA zeolite can produce 1-acetyl-2-methoxynaphthalene, a precursor to the anti-inflammatory Naproxen, with high yields when operating at high temperatures

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Citations

Improving the efficiency of the Diels–Alder process by using flow chemistry and zeolite catalysis

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