Issue 6, 2000

Calcined Mg–Al hydrotalcite as an efficient catalyst for the synthesis of guaiacol

Abstract

The use of calcined Mg–Al hydrotalcite as an efficient catalyst for the selective O-alkylation of catechol with dimethyl carbonate (DMC) to guaiacol in a continuous fixed bed flow reactor is described. A maximum guaiacol yield of 80% is obtained at 573 K under optimized conditions with a stable catalytic activity. A concerted mechanism involving acid–base pair sites in which a nucleophilic attack at the methyl carbon atom of DMC by the oxygen atom of the H-bonded phenolic compound or phenolate anion is proposed.

Article information

Article type
Paper
Submitted
25 Jul 2000
First published
07 Nov 2000

Green Chem., 2000,2, 266-268

Calcined Mg–Al hydrotalcite as an efficient catalyst for the synthesis of guaiacol

M. B. Talawar, T. M. Jyothi, P. D. Sawant, T. Raja and B. S. Rao, Green Chem., 2000, 2, 266 DOI: 10.1039/B006077L

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