Resolution of chiral amines

C - Chemistry – Metallurgy – 12 – P

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C12P 41/00 (2006.01) C12P 13/02 (2006.01)

Patent

CA 2313684

Chiral amines are resolved by selectively reacting an enantiomer of the amine with an alkyl ester in the presence of an enantioselective lipase enzyme to produce an amide of that enantiomer and separating it from the unreacted enantiomer, the alkyl group of the ester being an isoalkyl group. Isobutyl and especially isopropyl groups are preferred.

Pour résoudre les amines chirales, l'invention consiste à faire réagir sélectivement un énantiomère de l'amine avec un ester d'alkyle. Cette réaction se fait en présence d'une lipase énantiosélective de façon à produire un amide de cet énantiomère. On sépare ensuite l'ester de l'énantiomère qui n'a pas réagi. Le groupe alkyle de l'ester est un groupe isoalkyle. Les groupes préférés sont l'isobutyle et plus spécialement l'isopropyle.

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