Process for producing a 2-tertiary-alkyl substituted anthraquinones
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsAkitoshi Sugio, Shizuo Togo, Muneo Ito, Chiharu Nishizawa
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Abstract
A process for producing a 2-tertiary-alkyl substituted anthraquinone, characterized by carrying out catalytic oxidation of a diphenylmethane type compound having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are different from each other, and independently hydrogen or tertiary-alkyl having 4 or 5 carbon atoms with the proviso that one of R.sub.1 and R.sub.2 is hydrogen, and R.sub.3 is alkyl having 1-3 carbon atoms, in vapor phase in the presence of a catalyst containing vanadium and cerium is disclosed.
Claims8
A process for producing a 2-tertiary-alkyl substituted anthraquinone comprising catalytically oxidizing a diphenylmethane type compound having the formula:
- ##STR4## wherein R.sub.1 and R.sub.2 are different from each other, and independently hydrogen or tertiary-alkyl having 4 or 5 carbon atoms with the proviso that one of R.sub.1 and R.sub.2 is hydrogen, and R.sub.3 is alkyl having 1-3 carbon atoms, said catalytic oxidation being carried out in the presence of oxygen or air in the vapor phase in the presence of a catalyst containing vanadium and cerium.
Dependencies are inferred from the claim text.