United States Patent Office Patented Feb
3,644,486 United States Patent Office Patented Feb. 22, 1972 2 acid, isobutyric acid, and preferably acetic acid. The car 3,644,486 boxylic acids are advantageously used in as concentrated PROCESS FOR THE MANUEFACTURE OF OX a form as possible, for example, acetic acid in the form of ACYLATION PRODUCTS AND OPTIONALLY HYDROXYLATON PRODUCTS OF CONDENSED glacial acetic acid. Small contents of water of up to about AROMATIC COMPOUNDS 10% of the carboxylic acids used are tolerable, however. Manfred Boldt and Hans-Jurgen Arpe, Fischbach, Taunus, It is also possible to use mixtures of the carboxylic acids and Lothar Hornig, Frankfurt am Main, Germany, as with the corresponding anhydrides in amounts of, for signors to Farbwerke Hoechst Aktiengesellschaft example, up to 30%. vormals Meister Lucius & Bruning, Frankfurt am Main, The oxygen may be introduced in an elementary form Germany O or in the form of air. No Drawing. Filed Sept. 19, 1968, Ser. No. 760,964 As noble metals the elements rhodium, iridium, plati Claims priority, application Germany, Sept. 23, 1967, num, ruthenium and advantageously palladium may be F 53,564 used in a finely divided form. As noble metal compounds Ent, CI, C07c69/14, 69/24, 69/62 there may be used salts of the noble metals with inorganic U.S. C. 260-479 R 6 Claims acids or advantageously with aliphatic Saturated carboxylic acids or complex compounds thereof with unsaturated or aromatic compounds. Examples of suitable noble metal ABSTRACT OF THE DISCLOSURE compounds are palladium chloride, palladium sulfate, Catalytic manufacture of oxacylation products and palladium acetate, the complex of benzene and palladium optionally hydroxylation products of condensed aromatic 20 acetate, and compounds of alkali metal acylates with cmpounds from condensed aromatic compounds and palladium acetate.
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