发明公开
EP1132384A2 Process for the production of alpha-tocopherol acetate by condensation of trimethylhydroquinone with isophytol
有权
Verfahren zur Herstellung von alfa-Tocopherolacetat durch Kondensation von Trimethyl Hydrochinon mit Isophytol
- 专利标题： Process for the production of alpha-tocopherol acetate by condensation of trimethylhydroquinone with isophytol
- 专利标题（中）： Verfahren zur Herstellung von alfa-Tocopherolacetat durch Kondensation von Trimethyl Hydrochinon mit Isophytol
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申请号： EP00121076.4申请日： 2000-09-28
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公开(公告)号： EP1132384A2公开(公告)日： 2001-09-12
- 发明人: Krill, Steffen, Dr. , Kretz, Stephan , Huthmacher, Klaus, Dr.
- 申请人： Degussa AG
- 申请人地址： Bennigsenplatz 1 40474 Düsseldorf DE
- 专利权人： Degussa AG
- 当前专利权人： Degussa AG
- 当前专利权人地址： Bennigsenplatz 1 40474 Düsseldorf DE
- 优先权： DE10011403 20000309
- 主分类号： C07D311/72
- IPC分类号： C07D311/72
摘要：
Process for the production of α-tocopherol acetate in a recirculating process by condensation of trimethylhydroquinone and isophytol in the presence of a catalyst system consisting of a zinc halide and an aqueous protonic acid and optionally an elemental metal in a polar solvent/water mixture extractable or miscible with water and subsequent acylation of the resultant α-tocopherol and recirculation of the catalyst system.
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