Process for preparing alkylesters of saturated aliphatic carboxylic acids

摘要

Alkylesters of saturated aliphatic carboxylic acids are prepared by reacting aliphatic monoolefins containing internal double bonds and having 6 to 20 carbon atoms with carbon monoxide and an alkanol having one hydroxyl function in the presence of a catalyst of a cobalt compound and a promoter where the promoter is pyridine, a non-ortho- substituted alkylpyridine or a mixture thereof.PPThe monoolefins can possibly contain paraffins and the reaction is carried out with:P P(a) a promoter to cobalt ratio of 3/1 to 25/1; PP (b) a cobalt concentration from 0.02 to 0.2 gram-atom of cobalt per mole of monoolefin;PP(c) a temperature between 165 and 195 C.;PP(d) a pressure from 150 to 300 bars; PP(e) a molar ratio of alkanol to monoolefin from 1/1 to 10/1; andPP(f) a dwell time exceeding 15 minutes.