| 摘要 |
<p>A process is described concerning the catalytic preparation of diesters of saturated dicarboxylic acids, starting from olefinic hydrocarbon compounds.</p><p>The process is characterized in that an olefinic hydrocarbon having the formula R,CH=CHR<Sub>2</Sub>, wherein R, and R<Sub>2</Sub> represent indifferently hydrogen atoms, alkyl groups having up to 6 carbon atoms, alkylaryl-, arylalkyl groups having up to 8 carbon atoms, is made to react, possibly in an inert reaction medium, with a compound of copper (II) Cu(OR)X, wherein R represents an alkyl radical having up to 8 carbon atoms or an alcoxyethyl -CH<Sub>2</Sub>-CH<Sub>2</Sub>OR' radical, wherein R' represes an alkyl radical having up to 6 carbon atoms and where X is chosen from between chlorine and bromine, and with carbon monoxide, in the presence of a Palladium catalyst and at a temperature comprised between about 20°C and 200°C about.</p><p>Pd catalysts suited for this purpose are salts thereof soluble in the reaction medium and/or zerovalent Palladium compounds and/or metal Palladium; preferably there is used Pd acetylacetonate. '</p><p>The inert solvent medium is substantially anhydrous and preferably chosen between monofunctional alcohols and ethvlenealvcol mono-ethers or it mav be a hvdrocarbon.</p><p>As a CO source there may be used the industrial synthesis gas. The products thus obtained find their useful application in the field of plasticizers for synthetic resins, in the field of lubricants and of hydraulic fluids, etc.</p> |
