Title:
ONE-POT PROCESS FOR PRODUCING 1,2-BENZISOXAZOLE-3-METHANESULFONAMIDE
Document Type and Number:
WIPO Patent Application WO/2005/092869
Kind Code:
A1
Abstract:
A process for producing 1,2-benzisoxazole-3-methanesulfonamide which comprises using 4-hydroxycoumarin as a starting material and water and 1,2-dichloroethane as solvents to produce the target compound without isolating intermediates in the form of a solid; and an industrially useful process for producing 1,2-benzisoxazole-3-acetic acid, characterized by reacting 4-hydroxycoumarin with hydroxylamine in water.
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Inventors:
UENO YOSHIKAZU (JP)
ISHIKURA TSUTOMU (JP)
ISHIKURA TSUTOMU (JP)
Application Number:
PCT/JP2005/005349
Publication Date:
October 06, 2005
Filing Date:
March 24, 2005
Export Citation:
Assignee:
DAINIPPON PHARMACEUTICAL CO (JP)
UENO YOSHIKAZU (JP)
ISHIKURA TSUTOMU (JP)
UENO YOSHIKAZU (JP)
ISHIKURA TSUTOMU (JP)
International Classes:
C07D261/20; (IPC1-7): C07D261/20
Domestic Patent References:
| WO2003031330A1 | 2003-04-17 |
Foreign References:
| US3145082A | 1964-08-18 |
Other References:
SHIMIZU T. ET AL: "Shinki Kotenkan'yaku Zonisamide no Kaihatsu Kenkyu.", JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN., vol. 116, no. 7, 1996, pages 533 - 547, XP002993430
DATABASE CASREACT STN [online] 1963, MUSTAFA A. ET AL.: "Subsituted benzopyrano [3,2-c] pyran-2,10-diones and benzopyrano [3,2-c] pyran-2,8-diones.", XP002993281, Database accession no. (60:9720)
See also references of EP 1728786A4
DATABASE CASREACT STN [online] 1963, MUSTAFA A. ET AL.: "Subsituted benzopyrano [3,2-c] pyran-2,10-diones and benzopyrano [3,2-c] pyran-2,8-diones.", XP002993281, Database accession no. (60:9720)
See also references of EP 1728786A4
Attorney, Agent or Firm:
Kawamiya, Osamu (IMP Building 3-7, Shiromi 1-chome, Chuo-k, Osaka-shi Osaka 01, JP)
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