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Benzoylation of benzene and substituted benzenes catalyzed by superacid ZrO 2 :H 2 SO 4
Author(s) -
Jia ChengGuo,
Huang MeiYu,
Jiang YingYan
Publication year - 1993
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19930110511
Subject(s) - superacid , chemistry , benzene , toluene , chlorobenzene , catalysis , acid strength , organic chemistry , lewis acids and bases , friedel–crafts reaction , calcination , medicinal chemistry , zeolite
Superacid ZrO 2 :H 2 SO 4 showed high activity in Friedel—Crafts benzoylation of benzene and substituted benzenes such as chlorobenzene, toluene and 1,3,5‐trimethylbenzene. Benzophenones in 90–100% yields were obtained with catalytic amount of superacid ZrO 2 :H 2 SO 4 . The calcination temperature greatly influenced the acid strength and activity of the superacid ZrO 2 :H 2 SO 4 . The superacid has both Lewis and Bronsted acid sites. The reversibility of Friedel—Crafts benzoylation and transacylation were observed over the superacid. The used superacid could be readily regenerated and showed identical benzoylation activity to toluene.