| 摘要 |
Process for the co-production of carboxylic acids of the general formula R<1>-COOH and R<2>-COOH and carboxylic acid esters of general formula R<1>-COOCH2R<2> and R<2>-COOCH2R<1> from carboxylic acid esters of general formula R<1>-COOR<2> an/or ethers of general formula R<3>OR<4> (R<1>, R<2>, R<3>, R<4> representing (substituted) alkyl or (substituted) aryl, alkaryl or aralkyl, R<1> also representing H), carbon monoxide and hydrogen at elevated temperature and pressure in the presence of a ruthenium compound and a further Group VIII metal compound, hydrogen iodide, hydrogen bromide, elemental iodine and/or elemental bromine being added to the reaction mixture. The process is of special interest for the selective conversion of methyl acetate into ethyl acetate and acetic acid at pressures well below 100 bar. |
