Oxidation of mesityl oxide to citraconic anhydride

Details Oxidation of mesityl oxide to citraconic anhydride Oxidation of mesityl oxide to citraconic anhydride

1973-06-07

1976-06-15

Moatz, Harry I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252461, 252472, 252437, 25243, 252467, C07D30756

Patent

active

039637590

ABSTRACT:
Citraconic anhydride is made by the vanadium-catalyzed gas-phase air oxidation of mesityl oxide at about 200-500.degree.C. and atmospheric pressure with a contact time of less than 1 second. Preferred catalysts are vanadium oxide and vanadate salts. Preferred O.sub.2 /mesityl oxide molar ratios are about 10:1 to 100:1.

REFERENCES:
patent: 2443818 (1948-06-01), Elce et al.
patent: 3228966 (1966-01-01), Adams

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