Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2007-12-11
2007-12-11
Eyler, Yvonne (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C564S487000, C564S488000, C564S503000
Reexamination Certificate
active
10478439
ABSTRACT:
The present invention provides a process of starting from N-alkoxycarbonyl-ethylamine compounds having a leaving group at the β-position to prepare oxazolidinone derivatives of β-hydroxyethylamine compounds having an inverted steric configuration at the β-position carbon, which comprises introducing a step of treating in contact with water with heating under acidic to neutral conditions into the process. Also, the present invention provides a process of starting from N-alkoxycarbonyl-ethylamine compounds having a leaving group at the β-position to prepare β-hydroxyethylamine compounds having an inverted steric configuration at the β-position carbon, which comprises subjecting the oxazolidinone derivatives prepared as described above to a step of treating in contact with water under basic conditions.
REFERENCES:
patent: 4294966 (1981-10-01), Zergenyi
patent: 5670653 (1997-09-01), Hilpert
patent: 6140506 (2000-10-01), Baba et al.
patent: 32-002675 (1957-05-01), None
patent: 55-145650 (1980-11-01), None
patent: 55-145650 (1980-11-01), None
patent: 9-169744 (1997-06-01), None
patent: WO 02/00601 (2002-01-01), None
Langolois et al. Eur. J. Org. Chem. 1999, 3483-3488.
Parrodi et al. Tetrahedron Asymmetry, 1997, 8, 1075-1082.
Foglia et al. J. Org. Chem, 1988, 33, 766-771.
Adv. Carbohydr. Chem. Biochem, (1967), vol. 22, p. 109.
Adv. Carbohydr. Chem. Biochem, (1967), vol. 22, p. 139-141.
Murao Hiroshi
Takeda Toshihiro
Ueda Yasuyoshi
Yamashita Koki
Eyler Yvonne
Kaneka Corporation
Valenrod Yevgeny
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