Summary of the invention:
The objective of the invention is to overcome the deficiency that exists on the present resolving chiral amine method, a kind of kinetic resolution method of Chiral Amine is provided.
The step of the kinetic resolution method of Chiral Amine is following:
The adding mol ratio is 1: 0.5~3 Chiral Amine and acry radical donor in the reaction system of organic solvent; Ratio with Chiral Amine massfraction 10%-80% adds lypase, reacts 12-48 hour, and temperature of reaction is 30~70 ℃; Obtaining transformation efficiency is 50%, the acid amides of e.e value>99%.
Described lypase is Novozyme 435; Chiral Amine is 1-(1-naphthyl) ethamine, 1-(2-naphthyl) ethamine; Described organic solvent is toluene, ETHYLE ACETATE, THF, methylene dichloride, chloroform, methyl alcohol; Described acry radical donor is a S-styroyl alcohol acetic ester, R-styroyl alcohol acetic ester.
Among the present invention, under the catalysis of enzyme, the transformation efficiency of Chiral Amine reaches 50%, and the e.e value of gained ester reaches>and 99%, improved performance of products greatly, can satisfy various requirement to purity, reaction conditions is gentle simultaneously, has great using value.
Embodiment
The adding mol ratio is 1: 0.5~3 Chiral Amine and acry radical donor in the reaction system of organic solvent; Ratio with Chiral Amine massfraction 10%-80% adds lypase, reacts 12-48 hour, and temperature of reaction is 30~70 ℃; Obtaining transformation efficiency is 50%, the acid amides of e.e value>99%.
Described lypase is Novozyme 435; Chiral Amine is 1-(1-naphthyl) ethamine, 1-(2-naphthyl) ethamine; Described organic solvent be toluene, ETHYLE ACETATE,, THF, methylene dichloride, chloroform, methyl alcohol; Described acry radical donor is a S-styroyl alcohol acetic ester, R-styroyl alcohol acetic ester.
Among the present invention, under the catalysis of enzyme, the transformation efficiency of Chiral Amine reaches 50%, and the e.e value of gained ester reaches>and 99%, improved performance of products greatly, can satisfy various requirement to purity, have great using value.
Embodiment 1
In the toluene solvant of Chiral Amine volume, adding mol ratio at 10 times is 1: 0.5 1-(1-naphthyl) ethamine and S-styroyl alcohol acetic ester; Ratio with 1-(1-naphthyl) ethamine massfraction 10% adds Novi's letter 435; Reacted 48 hours; Temperature of reaction is 30 ℃, and obtaining transformation efficiency is 50%, the R-1-acetonaphthone ethamine of e.e value>99%.
Embodiment 2
In the toluene solvant of Chiral Amine volume, adding mol ratio at 10 times is 1: 3 1-(2-naphthyl) ethamine and S-styroyl alcohol acetic ester; Ratio with 1-(2-naphthyl) ethamine massfraction 80% adds Novi's letter 435; Reacted 12 hours; Temperature of reaction is 70 ℃, and obtaining transformation efficiency is 50%, the R-2-acetonaphthone ethamine of e.e value>99%.
Embodiment 3
In the toluene solvant of Chiral Amine volume, adding mol ratio at 10 times is 1: 2 1-(1-naphthyl) ethamine and R-styroyl alcohol acetic ester; Ratio with 1-(1-naphthyl) ethamine massfraction 40% adds Novi's letter 435; Reacted 24 hours; Temperature of reaction is 70 ℃, and obtaining transformation efficiency is 50%, the S-1-acetonaphthone ethamine of e.e value>99%.
Embodiment 4
In the ethyl acetate solvent of Chiral Amine volume, adding mol ratio at 10 times is 1: 2 1-(1-naphthyl) ethamine and R-styroyl alcohol acetic ester; Ratio with 1-(1-naphthyl) ethamine massfraction 40% adds Novi's letter 435; Reacted 24 hours; Temperature of reaction is 70 ℃, and obtaining transformation efficiency is 50%, the S-1-acetonaphthone ethamine of e.e value>99%.
Embodiment 5
In the tetrahydrofuran solvent of Chiral Amine volume, adding mol ratio at 10 times is 1: 2 1-(1-naphthyl) ethamine and R-styroyl alcohol acetic ester; Ratio with 1-(1-naphthyl) ethamine massfraction 40% adds Novi's letter 435; Reacted 24 hours; Temperature of reaction is 70 ℃, and obtaining transformation efficiency is 50%, the S-1-acetonaphthone ethamine of e.e value>99%.
Embodiment 6
In the chloroform solvent of Chiral Amine volume, adding mol ratio at 10 times is 1: 2 1-(1-naphthyl) ethamine and R-styroyl alcohol acetic ester; Ratio with 1-(1-naphthyl) ethamine massfraction 40% adds Novi's letter 435; Reacted 24 hours; Temperature of reaction is 70 ℃, and obtaining transformation efficiency is 50%, the S-1-acetonaphthone ethamine of e.e value>99%.
Embodiment 7
In the dichloromethane solvent of Chiral Amine volume, adding mol ratio at 10 times is 1: 2 1-(1-naphthyl) ethamine and R-styroyl alcohol acetic ester; Ratio with 1-(1-naphthyl) ethamine massfraction 40% adds Novi's letter 435; Reacted 24 hours; Temperature of reaction is 70 ℃, and obtaining transformation efficiency is 50%, the S-1-acetonaphthone ethamine of e.e value>99%.
Embodiment 8
In the methanol solvate of Chiral Amine volume, adding mol ratio at 10 times is 1: 2 1-(1-naphthyl) ethamine and R-styroyl alcohol acetic ester; Ratio with 1-(1-naphthyl) ethamine massfraction 40% adds Novi's letter 435; Reacted 24 hours; Temperature of reaction is 70 ℃, and obtaining transformation efficiency is 50%, the S-1-acetonaphthone ethamine of e.e value>99%.
Embodiment 9
In the dichloromethane solvent of Chiral Amine volume, adding mol ratio at 10 times is 1: 2 1-(1-naphthyl) ethamine and R-styroyl alcohol acetic ester; Ratio with 1-(2-naphthyl) ethamine massfraction 40% adds Novi's letter 435; Reacted 24 hours; Temperature of reaction is 70 ℃, and obtaining transformation efficiency is 50%, the S-1-acetonaphthone ethamine of e.e value>99%.
Embodiment 10
In the dichloromethane solvent of Chiral Amine volume, adding mol ratio at 10 times is 1: 2 1-(1-naphthyl) ethamine and S-styroyl alcohol acetic ester; Ratio with 1-(1-naphthyl) ethamine massfraction 40% adds Novi's letter 435; Reacted 24 hours; Temperature of reaction is 70 ℃, and obtaining transformation efficiency is 50%, the R-1-acetonaphthone ethamine of e.e value>99%.