发明名称 |
Manufacture of tocopherol |
摘要 |
In the manufacture of tocopherol (vitamin E) by reaction of isophytol with trimethylhydroquinone in the presence of zinc chloride and acid in a hydrocarbon solvent one of the starting compounds, isophytol, is pretreated with small amounts of ammonia or an amine. Tocopherol is obtained in higher yield and purity.
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申请公布号 |
US4191692(A) |
申请公布日期 |
1980.03.04 |
申请号 |
US19780896479 |
申请日期 |
1978.04.14 |
申请人 |
BASF AG |
发明人 |
GRAFEN, PAUL;KROESCHE, HENNING;PAUST, JOACHIM;PFOHL, SIGBERG;SCHULZ, BERNHARD |
分类号 |
C07D311/72;(IPC1-7):C07D311/72 |
主分类号 |
C07D311/72 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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