C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/486.7, 260/4
C07C 69/34 (2006.01)
Patent
CA 1187507
A B S T R A C T A process is described concerning t? catalytic prepara- tion of diesters of saturated dicarboxylic acids, starting from olefinic hydrocarbon compounds. The process is characterized in that an olefinic hydro- carbon having the formula R1CH=CHR2, wherein R1 and R2 re- present 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 -CH2-CH2OR' radical, wherein R' re- prec?s ?n alkyl radical having up to 6 carbon atoms and whe re 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. 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 acetylucetonate. The inert solvent medium is substantially anhydrous and preferably chosen between monofunctional alcohols and ethy- leneglycol mono-ethers or it may be n hydrocarbon. 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 or lubricants and of hydraulic fluids, etc.
406956
Agnes Giovanni
Rucci Guglielmo
Santini Claudio
Marks & Clerk
Montedison S.p.a.
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