发明授权
- 专利标题: PREPARATION OF ALPHA-TOCOPHEROL
- 专利标题(中): 生产α-生育酚
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申请号: EP96928908.1申请日: 1996-08-14
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公开(公告)号: EP0844995B1公开(公告)日: 1999-11-17
- 发明人: KUO, Yeong-Jen , HARTLEY, Gary, Wayne , GUSTAFSON, Bruce, LeRoy , ALLEN, David, John
- 申请人: EASTMAN CHEMICAL COMPANY
- 申请人地址: 100 North Eastman Road Kingsport, TN 37660 US
- 专利权人: EASTMAN CHEMICAL COMPANY
- 当前专利权人: EASTMAN CHEMICAL COMPANY
- 当前专利权人地址: 100 North Eastman Road Kingsport, TN 37660 US
- 代理机构: Wibbelmann, Jobst, Dr., Dipl.-Chem.
- 优先权: US516088 19950817
- 国际公布: WO9707113 19970227
- 主分类号: C07D311/72
- IPC分类号: C07D311/72
摘要:
Disclosed is an improved process for the preparation of alpha-tocopherol by the hydroxymethylation followed by the hydrogenation of non-α-tocopherols comprising β-, η-, and δ-tocopherols using a particular palladium on alumina catalyst wherein (1) the dispersion and depth of deposition of the palladium metal are within certain ranges, and (2) the alumina is of a particular crystalline phase.
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