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1005 条记录 (耗时 0.035 秒)

    Synthesis of cyclic organic compounds and metallocenes
    6.
    发明授权
    Synthesis of cyclic organic compounds and metallocenes 有权

    公开(公告)号：US11299508B2

    公开(公告)日：2022-04-12

    申请号：US16649934

    申请日：2018-09-19

    申请人： Univation Technologies, LLC

    发明人： Angela I. Padilla-Acevedo ,  Roger L. Kuhlman

    IPC分类号： C08F4/6592 ,  C07F17/00 ,  C07C45/45 ,  C07C45/48 ,  C08F4/76 ,  C08F10/02

    摘要： A method comprising synthesizing a cyclic organic compound via reaction of an unsubstituted or substituted cyclopentene with an unsubstituted or substituted acrylic acid in the presence of phosphoric and/or sulfonic acid reagent to make the cyclic organic compound. Also, a method of synthesizing a ligand for a transition metal, and a related substituted ligand-metal complex and catalyst, from the unsubstituted or substituted cyclopentene and unsubstituted or substituted acrylic acid. Also, the cyclic organic compound, ligand, and substituted ligand-metal complex and catalyst synthesized thereby. Also a method of polymerizing an olefin with the catalyst to give a polyolefin, and the polyolefin made thereby.

    Processes for preparing 4-methyl-5-nonanone and 4-methyl-5-nonanol
    9.
    发明授权
    Processes for preparing 4-methyl-5-nonanone and 4-methyl-5-nonanol 有权

    公开(公告)号：US10882805B2

    公开(公告)日：2021-01-05

    申请号：US16722123

    申请日：2019-12-20

    申请人： Shin-Etsu Chemical Co., Ltd.

    发明人： Yuki Miyake ,  Takeshi Kinsho ,  Yusuke Nagae

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

    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 2-methylpentanoic anhydride of the following formula (1) and an n-butyl nucleophilic reagent of the following general formula (2) in which M represents Li, MgZ1, or ZnZ1, wherein Z1 represents a halogen atom or an n-butyl group, to a nucleophilic substitution. reaction Coproduce 4-methyl-5-nonanone (3), as well as a process for preparing 4-methyl-5-nonanol of the following formula (5), 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 (5).

    Method for producing diol having cyclic acetal skeleton
    10.
    发明授权
    Method for producing diol having cyclic acetal skeleton 有权

    公开(公告)号：US10370384B2

    公开(公告)日：2019-08-06

    申请号：US16078292

    申请日：2017-03-09

    申请人： Mitsubishi Gas Chemical Company, Inc.

    发明人： Masahiro Yamane

    IPC分类号： C07D319/00 ,  C07D493/10 ,  C07D319/06 ,  C07C45/45 ,  C07C45/79 ,  C07C45/80 ,  C07C45/81 ,  C07C45/82

    摘要： The present invention provides a method for producing a diol having a cyclic acetal skeleton, in which the method include an acetalization reaction step of obtaining a diol having a cyclic acetal skeleton by subjecting raw material hydroxypivalaldehyde and at least pentaerythritol and/or trimethylolpropane to an acetalization reaction under an acid catalyst and the raw material hydroxypivalaldehyde can contain a prescribed amount of at least one impurity selected from the group consisting of formaldehyde, neopentyl glycol, an ester compound having a neopentyl glycol skeleton represented by formula (III), and isobutyraldehyde.