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- W2000647269 abstract "The liquid–solid phase acetylation of toluene with acetic anhydride was carried out over solid superacids of sulfated metal oxides (SO4/MeOx) and supported metal oxides (Me1Ox/Me2Oy) selected from the results in the benzoylation of toluene with benzoic anhydride [K. Arata, H. Nakamura, and M. Shouji, Appl. Catal. A: General, 197, 213 (2000)]. The reaction was conducted by adding dropwise a mixture of 2 mmol of acetic anhydride and 2 mL of toluene onto 0.5 g of catalyst suspended in 13 mL of toluene with stirring at 110 °C in the first period of 30 min, followed by stirring the mixture for 2 h. The yields of 2′-, 3′-, and 4′-methylacetophenones in the distribution of 9–10% 2′-, 1–2% 3′- and 89–90% 4′-isomers were 24 and 13% for the sulfated metal oxides of SO4/ZrO2 and SO4/SnO2, those by Pt and Ru promoted sulfated zirconias (Pt-, Ru-SO4/ZrO2) being 21 and 28%, respectively. The supported metal oxides of Fe2O3/ZrO2 and WO3/ZrO2 gave yields of 18 and 15%, respectively. The propionylation and butyrylation of..." @default.
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- W2000647269 date "2003-05-01" @default.
- W2000647269 modified "2023-10-16" @default.
- W2000647269 title "Friedel–Crafts Acetylation, Propionylation, and Butyrylation of Toluene Catalyzed by Solid Superacids" @default.
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- W2000647269 doi "https://doi.org/10.1246/bcsj.76.1071" @default.
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