| 发明名称 |
Dihydropyran derivatives, their processes of preparation and their use. |
| 摘要 |
<p>New pyran derivatives and processes for their preparation and their uses. …<??>These derivatives are prepared by condensation of the lithium dienolate of prenal with an aldehyde or a ketone. …<??>The pyran derivative prepared from beta -ionylideneacetaldehyde, by treatment in the presence of a catalyst, leads directly to retinal.</p> |
| 申请公布号 |
GR3015563(T3) |
申请公布日期 |
1995.06.30 |
| 申请号 |
GR19940403297T |
申请日期 |
1995.03.30 |
| 申请人 |
RHONE-POULENC NUTRITION ANIMALE |
发明人 |
CHABARDES, PIERRE;DUHAMEL, LUCETTE;DUHAMEL, PIERRE;GUILLEMONT, JEROME;POIRIER, JEAN-MARIE |
| 分类号 |
C07C45/60;C07C403/14;C07D309/30;C07D311/72;C07D403/14;(IPC1-7):C07D309/30 |
主分类号 |
C07C45/60 |
| 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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