Organic reactions catalyzed by solid superacids. 5. Perfluorinated sulfonic acid resin (Nafion-H) catalyzed intramolecular Friedel-Crafts acylation

T Yamato, C Hideshima, GKS Prakash…

Index: Yamato, Takehiko; Hideshima, Chieko; Prakash, G. K. Surya; Olah, George A. Journal of Organic Chemistry, 1991 , vol. 56, # 12 p. 3955 - 3957

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Citation Number: 61

Abstract

Ndion-H, a perfluorinated sulfonic acid resin, catalyzed the intramolecular Friedel-Crafts acylation of diarylalkane-2-carboxylic acids and arylalkanoic acids in refluxing p-xylene to provide cyclic ketones. The reactions were clean, and the water that was formed as a byproduct did not deactivate the catalyst. It was also found that the intramolecular acylation of the corresponding acid chlorides ocd under much milder reaction conditions. The ...