Process for the preparation of optically active amines or...

Details Process for the preparation of optically active amines or... Process for the preparation of optically active amines or...

2005-06-14

2005-06-14

Chang, Ceila (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

06906197

ABSTRACT:
A process produces an optically active amine or its salt and includes the steps of reacting a ketone of Formula (1a)wherein R1is typically an unsubstituted or substituted hydrocarbon group; and R2ais typically a hydrocarbon group having at least one oxo group and optionally having other substituent, with an optically active amine of Formula (2):wherein R3is an unsubstituted or substituted aryl group; R4is an unsubstituted or substituted lower alkyl group; and C1is an asymmetric carbon atom, in the presence of an organic acid to thereby yield a corresponding optically active imine, hydrogenating the imine in the presence of a catalyst to yield a corresponding amine, subjecting the amine or its salt to hydrogenolysis in the presence of a catalyst, and reducing the hydrogenolyzed product with a reducing agent.

REFERENCES:
patent: 0 357 047 (1990-03-01), None
patent: 0 829 473 (1998-03-01), None
patent: 11-240867 (1999-09-01), None
patent: 11-240868 (1999-09-01), None
STN International ® CAPLUS Database, Accession No. 1995:987954; Kanbara et al., JP 07224033, abstract.
Jan Jorn Hansen et al.; Acta Chemica Scandinavica; Series B; vol. 28; No. 4; 1974; pp. 418-424; XP001109799.
Hiroyuki Nohira et al., Bulletin of the Chemical Society of Japan; vol. 43; No. 7; 1970; pp. 2230-2233; XP001109796.
Gerrit Limberg et al.; SYNTHESIS; No. 1; 1999; pp. 178-183; XP0001091282.
B. Minder et al.; Journal of Catalysis; vol. 160; 1996; pp. 261-268; XP0001091313.
Yuji Minoura et al.; J. Am. Chem. Soc.; vol. 81; 1959; pp. 4689-4692; XP002258890.
Arie Gutman, et al.; Tetrahedron: Asymmetry; vol. 9, No. 24; Dec. 24, 1998; pp. 4369-4379; XP004150938.
Wolfgang Wiehl et al.; Chem. Ber.; vol. 119; 1986; pp. 2668-2677; XP002248465.
Lie Kyo Liem et al.; Arch. Pharm. (Weinheim); vol. 324; 1991; pp. 335-347; XP001091223.
David Nichols et al.; J. Med. Chem.; vol. 31, No. 7; 1988; pp. 1406-1412; XP001149357.
James Marshall et al.; J. Am. Chem. Soc.; vol. 110; 1988; pp. 2925-2931; XP002248466.

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