Patent ID: 8884041
Filing Date: 2014-11-11
Classification: C07C

Abstract:
1. A process for synthesizing an ω-amino acid (ester) of formula R 3 OOC—(CH 2 ) q —CH 2 NH 2 , in which R 3 is H or an n-butyl radical and q is an integral index of between 2 and 13, from a monounsaturated fatty acid (ester) of formula (R 1 —CH═CH—(CH 2 ) p —COO) x R 2 , in which x represents 1, 2 or 3, R 1 is H or a hydrocarbon radical comprising from 4 to 11 carbon atoms and, where appropriate, a hydroxyl function, R 2 is H or an alkyl radical comprising from 2 to 4 carbon atoms, and may contain one or more heteroatoms, and p is an integral index of between 2 and 11, comprising a reaction step of ammoniation, leading to the conversion of the carbonyl function to a nitrile function, wherein: in a first stage, the unsaturated fatty acid/ester is converted into an ω-unsaturated nitrile of formula CH in a second stage, this ω-unsaturated nitrile is converted into an ester nitrile of formula R and then in a third stage, the ester nitrile is hydrogenated to ω-amino acid (ester) of formula ROOC—(CH