发明名称 |
HYDROXYMETHYLATION OF TOCOPHEROL |
摘要 |
<p>Conversion of non- alpha -tocopherols (A) into alpha -tocopherols (B) by reaction of at least one (A) with formaldehyde (C) or a derivative in the presence of boric acid or a derivative under catalytic reducing conditions comprises use of an azeotropic trimethyl borate (D1) /methanol (D2) mixture (D) as combined solvent and catalyst, in addition to a non-polar organic solvent (E).</p> |
申请公布号 |
JPH09124635(A) |
申请公布日期 |
1997.05.13 |
申请号 |
JP19960272388 |
申请日期 |
1996.10.15 |
申请人 |
F HOFFMANN LA ROCHE AG |
发明人 |
KONRAATO BURIYUTSUGEMAN;HOAN RAMON ERUGIFUERA;TOOMASU NETSUCHIYAA;YOHAN RIIGURU |
分类号 |
B01J21/02;C07B61/00;C07D311/72;(IPC1-7):C07D311/72 |
主分类号 |
B01J21/02 |
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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