发明名称 |
INTERMEDIATES, PROCESS FOR THEIR PREPARATION, AND THEIR USE FOR THE SYNTHESIS OF VITAMINS A AND E |
摘要 |
New intermediates and processes for the preparation of vitamins A and E, which are the acetals of 5,6-dihalo-3-methyl-3-hydroxyhexanal or of 6-halo-3-hydroxy-3-methyl-5-hexenal or 3-methyl-3-hydroxy-5-hexenal, as well as processes for making the intermediates. After dehydrohalogenation and dehydration these intermediates are condensed directly with beta -ionone or with 2-methyl-2-heptene-6-one to synthesize vitamins A and E respectively.
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申请公布号 |
US5120864(A) |
申请公布日期 |
1992.06.09 |
申请号 |
US19900620854 |
申请日期 |
1990.12.03 |
申请人 |
RHONE-POULENC NUTRITION ANIMALE |
发明人 |
CHARBARDES, PIERRE F.;DUHAMEL, LUCETTE;DUHAMEL, PIERRE;GUILLEMONT, JEROME;POIRIER, JEAN-MARIE |
分类号 |
C07D317/12;B01J27/08;B01J31/02;C07B61/00;C07C45/59;C07C47/24;C07C403/14;C07C403/22;C07D317/16;C07D317/20;C07D319/06;C07D325/00;C07F9/655 |
主分类号 |
C07D317/12 |
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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