Title:
PROCESSES FOR PRODUCING TETRAHYDROPYRAN-4-ONE AND PYRAN-4-ONE
Document Type and Number:
WIPO Patent Application WO/2005/061479
Kind Code:
A1
Abstract:
A process for producing tetrahydropyran-4-one, which is represented by the formula (1), characterized by reacting at least one of dihydropyran-4-one and pyran-4-one, which are represented by the formula (2): (2) (wherein (A) indicates a single bond or double bond), with hydrogen either (a) in a mixed solvent comprising an aprotic solvent and an alcohol solvent in the presence of a metal catalyst or (b) in a hydrophobic organic solvent in the presence of an anhydrous metal catalyst obtained by dehydrating a hydrous metal catalyst.
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Inventors:
NISHINO SHIGEYOSHI
HIROTSU KENJI
SHIMA HIDETAKA
SUZUKI SHINOBU
HIROTSU KENJI
SHIMA HIDETAKA
SUZUKI SHINOBU
Application Number:
PCT/JP2004/018949
Publication Date:
July 07, 2005
Filing Date:
December 17, 2004
Export Citation:
Assignee:
UBE INDUSTRIES (JP)
NISHINO SHIGEYOSHI
HIROTSU KENJI
SHIMA HIDETAKA
SUZUKI SHINOBU
NISHINO SHIGEYOSHI
HIROTSU KENJI
SHIMA HIDETAKA
SUZUKI SHINOBU
International Classes:
C07C49/185; C07D309/30; C07D309/38; (IPC1-7): C07D309/30; B01J23/44; B01J37/00; C07C45/45; C07C49/185
Foreign References:
| JPS63170372A | 1988-07-14 | |||
| JPH1045660A | 1998-02-17 | |||
| JPH07145162A | 1995-06-06 |
Other References:
CORNUBERT R.ET AL: "Heterocyclohexane stereochemistry. III. Stereo-chemistry of the tetrahydropyran ring. Derivates substituted in the 3 and 5 positions.", BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE, 1950, pages 36 - 40, XP008112009
SORKIN E.ET AL: "Chemical similarity. II.", HELVETICA CHIMICA ACTA., vol. 31, 1948, pages 65 - 75, XP002401416
OGATA Y.ET AL: "Yuki kagobutsu no sanka to kangen.", NANCODO CO. LTD., 1964, pages 528 - 540, XP003004047
See also references of EP 1700853A4
SORKIN E.ET AL: "Chemical similarity. II.", HELVETICA CHIMICA ACTA., vol. 31, 1948, pages 65 - 75, XP002401416
OGATA Y.ET AL: "Yuki kagobutsu no sanka to kangen.", NANCODO CO. LTD., 1964, pages 528 - 540, XP003004047
See also references of EP 1700853A4
Attorney, Agent or Firm:
Tsukuni, Hajime (22-12 Toranomon 1-chome, Minato-k, Tokyo 01, JP)
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