Patent ID: 8697401
Filing Date: 2014-04-15
Classification: C07C,C12P

Abstract:
1. A process for the synthesis of an ω-amino acid (ester) of formula ROOC—(CH 2 ) q —CH 2 —NH 2 , in which R is H or an alkyl radical comprising from 1 to 4 carbon atoms and q is an integral index equal either to p or to p+2 or to n or n+2, of between 2 and 15, starting from a monounsaturated fatty acid (ester) of formula R 1 —CH═CH—(CH 2 ) p —COOR 2 , in which R 1 is H, an alkyl radical comprising from 4 to 14 carbon atoms, or a hydroxyl functional group, R 2 is H or an alkyl radical comprising from 1 to 4 carbon atoms and p is an integral index of between 2 and 11, comprising an ammoniation reaction stage resulting in the conversion of the carbonyl functional group to a nitrile functional group, wherein: in a first stage, the unsaturated fatty acid/ester is converted to an unsaturated dinitrile of formula NC—(CH in a second stage, this unsaturated dinitrile is converted to an acid/ester nitrile of formula R in a third stage, the acid/ester nitrile is hydrogenated to give an ω-amino acid (ester) of formula COOR—(CH