Friedel-Crafts acylation of toluene and p-xylene with carboxylic acids catalyzed by zeolites

B Chiche, A Finiels, C Gauthier, P Geneste…

Index: Chiche, Bich; Finiels, Annie; Gauthier, Catherine; Geneste, Patrick Journal of Organic Chemistry, 1986 , vol. 51, # 11 p. 2128 - 2130

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Citation Number: 266

Abstract

In this study, the acylation of toluene and benzene with octanoic acid catalyzed by the CeNaY zeolite shows low KT/KB rate ratio (KT/KB obtained by the competitive method of rate determination= 12) and high para/ortho isomer ratio (94% para isomer), ie, low substrate hut high positional selectivities. These observations are inconsistent with the Brown selectivity rules which predict that low substrate selectivity is accompanied by little ...