发明名称 |
Process for preparing 2,7-dimethyl-2,4,6-octatrienal monoacetals |
摘要 |
The invention relates to a process for preparing 2,7-dimethyl-2,4,6-octatrienal monoacetals of the general formula I which comprises a) condensing an ester phosphonium salt of the general formula II or an ester phosphonate of the general formula III with an aldehyde of the formula IV in a Wittig or Wittig-Horner reaction to give an acetal ester of the general formula V b) reducing the ester of the formula V to give an acetal alcohol of the general formula VI and c) oxidizing the alcohol to 2,7-dimethyl-2,4,6-octatrienal monoacetals of the general formula I, where the substituents have the meaning defined in the description.
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申请公布号 |
US2002128519(A1) |
申请公布日期 |
2002.09.12 |
申请号 |
US20020094819 |
申请日期 |
2002.03.12 |
申请人 |
ERNST HANSGEORG;HENRICH KLAUS |
发明人 |
ERNST HANSGEORG;HENRICH KLAUS |
分类号 |
C07D317/14;C07C41/48;C07C43/315;C07C45/38;C07C45/72;C07C47/277;C07C67/31;C07C67/333;C07C67/343;C07C69/73;C07C69/734;C07C69/74;C07D317/18;C07D317/20;C07D317/26;C07D317/30;C07D319/06;(IPC1-7):C07C45/72 |
主分类号 |
C07D317/14 |
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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