HYDROGENATION OF FATTY ACIDS ESTERS. III. HYDROGENATION OF METHYL (9Z,12Z)-OCTADECADIENOATE AND METHYL (9Z,12Z,15Z)-OCTADECATRIENOATE

Article abstract of DOI:10.1135/cccc19922593

The title hydrogenation catalyzed by nickel(II) 2,4-pentanedionate-triethylaluminium system has been studied with the use of combination of initial rate measurements with time changes of product distribution.It was found that the hydrogenation of methyl (9Z,12Z)-octadecadienoate is first order in the octadecadienoate.Similar results were obtained also for (9Z,12Z,15Z)-octadecatrienoate.The course of both reactions has been described by models involving set of parallel and consecutive hydrogenation steps and reversible isomerizations.Computer rate constants for hydrogenation of methyl (9Z,12Z)-octadecadienoate support qualitative conclusions deduced from the product analysis.