发明授权
- 专利标题： Processes for preparing tetrahydropyran-4-one and pyran-4-one
- 专利标题（中）： 制备四氢吡喃-4-酮和吡喃-4-酮的方法
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申请号： US10583562申请日： 2004-12-17
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公开(公告)号： US07745649B2公开(公告)日： 2010-06-29
- 发明人: Shigeyoshi Nishino , Kenji Hirotsu , Hidetaka Shima , Shinobu Suzuki
- 申请人： Shigeyoshi Nishino , Kenji Hirotsu , Hidetaka Shima , Shinobu Suzuki
- 申请人地址： JP Ube-shi
- 专利权人： UBE Industries, Ltd.
- 当前专利权人： UBE Industries, Ltd.
- 当前专利权人地址： JP Ube-shi
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： JP2003-422053 20031219; JP2004-110673 20040405; JP2004-110674 20040405; JP2004-118686 20040414; JP2004-140152 20040510; JP2004-198148 20040705
- 国际申请： PCT/JP2004/018949 WO 20041217
- 国际公布： WO2005/061479 WO 20050707
- 主分类号： C07D309/30
- IPC分类号： C07D309/30
摘要：
The present invention relates to a process for preparing tetrahydropyran-4-one represented by the formula (1): which comprises reacting at least one kind of dihydropyran-4-one and pyran-4-one represented by the formula (2): wherein represents a single bond or a double bond, and hydrogen (a) in the presence of a metal catalyst, in a mixed solvent of an aprotic solvent and an alcohol solvent, or (b) in the presence of an anhydrous metal catalyst in which a hydrated metal catalyst is subjected to dehydration treatment, in a hydrophobic organic solvent.
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