| abstract |
The present invention relates to a method for synthesizing a nitrile/fatty ester aldehyde, including the following steps: 1) hydroformylating a nitrile/ester/ω unsaturated fatty acid substrate under specific partial pressure, temperature, reaction time, nitrile/ester/ω unsaturated fatty acid reactant conversion rate, catalyst, [substrate]/[metal] molar ratio, and [ligand]/[metal] molar ratio conditions, such as to obtain, from the reaction: a hydroformylation product including at least one nitrile/ester/fatty acid aldehyde of formula: OHC-(CH 2 ) r+2 -R, and an isomerate including at least one nitrile/ester/internally unsaturated fatty acid isomer, wherein at least 80% of the internal isomer(s) of the isomerate consist of the unsaturated ω-1 isomer of formula CH 3 -CH=CH-(CH 2 ) r-1 -R ; then 2) separating and recovering the nitrile/ester/ fatty acid aldehyde and the isomerate. |