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    Processes for preparing 4-methyl-5-nonanone and 4-methyl-5-nonanol
    3.
    发明授权
    Processes for preparing 4-methyl-5-nonanone and 4-methyl-5-nonanol 有权

    公开(公告)号：US10882806B2

    公开(公告)日：2021-01-05

    申请号：US16722138

    申请日：2019-12-20

    申请人： Shin-Etsu Chemical Co., Ltd.

    发明人： Yuki Miyake ,  Takeshi Kinsho ,  Ryo Komatsu

    IPC分类号： C07C29/143 ,  C07C17/16 ,  C07C51/56 ,  C07C45/45 ,  C07C51/487

    摘要： The present invention provides a process for preparing 4-methyl-5-nonanone of the following formula (3), the process comprising at least a step of subjecting pentanoic anhydride of the following formula (1) and a 2-pentyl nucleophilic reagent of the following general formula (2), in which M represents Li, MgZ1, or ZnZ1, wherein Z1 represents a halogen atom or a 2-pentyl group, to a nucleophilic substitution reaction to produce 4-methyl-5-nonanone (3), as well as a process for preparing 4-methyl-5-nonanol of the following formula (7), the process comprising at least steps of preparing 4-methyl-5-nonanone and subjecting the obtained 4-methyl-5-nonanone and a reducing agent to a reduction reaction to produce 4-methyl-5-nonanol (7).