CPC C07C 69/675 (2013.01) [C07C 67/02 (2013.01); C07C 67/03 (2013.01); C07C 67/08 (2013.01); C07C 69/732 (2013.01); C12P 7/62 (2013.01); C12Y 301/01 (2013.01)] | 14 Claims |
1. A method for producing fatty alcohol esters of 3-hydroxybutyric acid,
(A) wherein, according to a first synthesis route (A), at least one compound of the general formula (Ia)
CH3—CH(OH)—CH2—C(O)OR1 (Ia)
wherein, in the general formula (Ia), the radical R1 represents hydrogen or C1-C4-alkyl,
is reacted with at least one fatty alcohol (II) selected from C10-C30-fatty alcohols,
wherein the reaction is carried out in the absence of any solvents,
wherein the reaction is carried out in the presence of an enzyme as a catalyst, wherein the catalyst is recycled after the reaction, and
wherein during the reaction, the compound according to the general formula (IVa)
R1—OH (IVa)
is formed simultaneously, wherein, in general formula (IVa), the radical R1 represents hydrogen or C1-C4-alkyl, wherein the compound according to the general formula (IVa) is continuously withdrawn from the reaction;
or else
(B) wherein, according to a second synthesis route (B), which is alternative to synthesis route (A), at least one compound of the general formula (Ib)
CH3—CH(OR2)—CH2—C(O)—O—C(O)—CH2—CH(OR2)—CH3 (Ib)
wherein, in the general formula (Ib), the radical R2 represents an acyl group selected from an acetyl group of formula —C(O)—CH3 or a propionyl group of formula —C(O)—C2H5,
is reacted with at least one fatty alcohol (II) selected from C10-C30-fatty alcohols, followed by hydrolysis of the acyl group;
so that, as a reaction product (III), in each case a C10-C30-fatty alcohol ester of 3-hydroxybutyric acid is obtained.
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