Process for the preparation of levetiracetam

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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548546, 548547, 548550, C07D20712, C07D20714, C07D20716

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active

061074926

ABSTRACT:
Levetiracetam is prepared by optical resolution of etiracetam by means of preparative high performance liquid chromatography or continuous simulated moving bed chromatographic system using silica gel supporting amylose tris(3,5-dimethylphenylcarbamate) as a packing material.

REFERENCES:
patent: 4696943 (1987-09-01), Gobert et al.
patent: 4861872 (1989-08-01), Okamoto et al.
patent: 4912205 (1990-03-01), Okamoto et al.
patent: 5518625 (1996-05-01), Priegnitz et al.
patent: 5639824 (1990-03-01), Yoshio Okamoto
Franco et al., "3,5-Dimethylphenylcarbamates of amylose, chitosan and cellulos bonded on silica gel --Comparison of their chiral recognition abilities as high-performance liquid chromatography chiral stationary phases," J. of Chromatography A, 796, pp. 2, 1998.
Yashima et al., "3,5-Dimethylphenylcarbamates of cellulose and amylose regioselectively bonded to silica gel as chiral stationary phases for high-performance liquid chromatography," J. of Chromatography A, 877, pp. 11-19, 1994.
Patent Abstracts of Japan, vol. 095, No. 003, Apr. 28, 1995, & JP 06 343857 A (Daicel Chem. Ind. Ltd.), Dec. 20, 1994 *Abstract*.
Patent Abstracts of Japan, vol. 016, No. 443 (C-0985), Sep. 16, 1992 & JP 04 154795 A (Daicel Chem. Ind. Ltd.), May 27, 1992, *Abstract*.
Patent Abstracts of Japan, vol. 018, No. 001 (C-1148), Jan. 6, 1994 & JP 05 246950 A (Sumitomo Chem. Co. Ltd.), Sep. 24, 1993 *Abstract*.

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