Selective O-alkylation of cresols with methanol: catalysis by Cs loaded silica, a solid base

Bal, Rajaram ; Sivasanker, S. (2000) Selective O-alkylation of cresols with methanol: catalysis by Cs loaded silica, a solid base Green Chemistry, 2 (3). pp. 106-107. ISSN 1463-9262

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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/2000...

Related URL: http://dx.doi.org/10.1039/B001097I

Abstract

The O-alkylation of hydroxy aromatic compounds such as cresols is conveniently carried out over easy to prepare alkali loaded silica catalysts in the vapour phase with high selectivities (ca. 99%). The activities of the catalysts increase with alkali loading and the basicity of the metal (Cs > K > Na > Li). In the case of p-cresol over Cs/SiO2, the yield of the o-alkylated product is as high as 94%.

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