| 摘要 |
The invention relates to a process for the co-production of carboxylic acids of formula R<1>COOH and/or R<2>COOH and carboxylic acids of the formula R<1>CH2COOH and/or R<2>CH2COOH by reacting one or more compounds of the formula R<1>XR<2> in which X represents a <CHEM> moiety and in which R<1>, R<2> and R<3> represent similar or dissimilar hydrocarbon moieties which may be substituted with one or more inert substituents, with carbon monoxide and hydrogen in the presence of a rhodium catalyst and an iodide and/or bromide source, characterized in that the reaction is carried out under virtually anhydric conditions and in the presence - per mole of the compound R<1>XR<2> - of at least 2 moles of a carboxylic acid of the formula R<4>COOH, in which R<4> represents a hydrocarbon moiety which may be substituted with one or more inert substituents |
