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    METHOD FOR PRODUCING 2,4-DIALKYLBENZALDEHYDE
    3.
    发明公开
    METHOD FOR PRODUCING 2,4-DIALKYLBENZALDEHYDE 审中-公开

    公开(公告)号：US20240132434A1

    公开(公告)日：2024-04-25

    申请号：US17769151

    申请日：2020-10-16

    申请人： MITSUBISHI GAS CHEMICAL COMPANY, INC.

    发明人： Toru SHISHIMI ,  Tatsuya UTAMURA ,  Yutaka MATSUURA ,  Shinichi NAGAO

    IPC分类号： C07C45/49

    CPC分类号： C07C45/49

    摘要： An object of the present invention is to provide a method for producing 2,4-dialkylbenzaldehyde with excellent conversion rate and yield, and excellent regioselectivity for formylation, by allowing carbon monoxide to react on a starting material containing a specific m-dialkylbenzene in the presence of hydrogen fluoride and boron trifluoride. The method for producing 2,4-dialkylbenzaldehyde according to the present invention comprises a step of allowing carbon monoxide to react on a starting material containing m-dialkylbenzene represented by formula (1) in the presence of hydrogen fluoride and boron trifluoride for formylation at least at a position (a), wherein the starting material is a dialkylbenzene containing more than 90 mol % of m-dialkylbenzene represented by formula (1), and the number of moles of boron trifluoride relative to 1 mole of m-dialkylbenzene represented by formula (1) is 0.7 mol or more and 3.0 mol or less:






    a wherein R1 represents an alkyl group having 1 or more and 3 or less carbon atoms, and R2represents a chain or cyclic alkyl group having 2 or more and 7 or less carbon atoms, with a secondary or tertiary carbon at the benzylic position, provided that the number of carbons of R2 is larger than the number of carbons of R1.

    NOVEL (POLY)AMINE COMPOUND, RESIN AND CURED PRODUCT
    4.
    发明申请
    NOVEL (POLY)AMINE COMPOUND, RESIN AND CURED PRODUCT 审中-公开

    公开(公告)号：US20200172470A1

    公开(公告)日：2020-06-04

    申请号：US16634530

    申请日：2018-07-27

    申请人： Mitsubishi Gas Chemical Company, Inc.

    发明人： Masatoshi ECHIGO ,  Takashi MAKINOSHIMA ,  Yutaka MATSUURA ,  Toru SHISHIMI

    IPC分类号： C07C215/80 ,  C07C211/50 ,  C07C217/84 ,  C07C211/58 ,  C07C255/58 ,  C07D233/64 ,  C08G73/02

    摘要： A (poly)amine compound represented by the following formula (0):wherein RX is a 2nA-valent group having 1 to 70 carbon atoms or a single bond; each R1A is independently any of an alkyl group having 1 to 30 carbon atoms and optionally having a substituent, an aryl group having 6 to 30 carbon atoms and optionally having a substituent, a crosslinking group having 2 to 30 carbon atoms and optionally having a substituent, an alkoxy group having 1 to 30 carbon atoms and optionally having a substituent, a halogen atom, a nitro group, an amino group having 0 to 30 carbon atoms and optionally having a substituent, a carboxyl group, a thiol group and a hydroxy group, wherein when R1A is any of the alkyl group, the aryl group, the crosslinking group and the alkoxy group, R1A optionally contains at least one bond selected from the group consisting of an ether bond, a ketone bond and an ester bond, and at least one R1A is an amino group having 0 to 30 carbon atoms and optionally having a substituent; X is an oxygen atom or a sulfur atom, or X is optionally absent; each R independently represents any of a benzene ring, a biphenyl ring, a naphthalene ring, an anthracene ring and a pyrene ring; each m is independently an integer of 0 to 9, wherein at least one m is an integer of 1 to 9; and nA is an integer of 1 to 4.

    METHOD FOR PRODUCING m-DIALKYLBENZALDEHYDE
    6.
    发明申请
    METHOD FOR PRODUCING m-DIALKYLBENZALDEHYDE 有权

    公开(公告)号：US20220363622A1

    公开(公告)日：2022-11-17

    申请号：US17634097

    申请日：2020-07-27

    申请人： MITSUBISHI GAS CHEMICAL COMPANY, INC.

    发明人： Toru SHISHIMI ,  Tatsuya UTAMURA ,  Yutaka MATSUURA ,  Tatsuyuki KUMANO

    IPC分类号： C07C45/50

    摘要： An object of the present invention is to provide a method for producing m-dialkylbenzaldehyde by using a reaction starting material containing 1,4-dialkylbenzene. The method for producing m-dialkylbenzaldehyde represented by formula (3), comprising a step of allowing carbon monoxide to react on a reaction starting material containing 1,4-dialkylbenzene represented by formula (1) in the presence of a Bronsted acid and a Lewis acid, wherein the reaction starting material is 1,4-dialkylbenzene represented by formula (1), or a mixture of 1,4-dialkylbenzene represented by formula (1) and 1,3-dialkylbenzene represented by formula (2), containing 10 mol % or more of the 1,4-dialkylbenzene represented by formula (1),
    wherein in formulae (1) to (3), R1 represents a methyl group or an ethyl group, and R2 represents a chain or cyclic alkyl group having 3 or more and 6 or less carbon atoms that has a tertiary carbon at the benzyl position.