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    METHOD FOR PRODUCING METHYLENE DISULFONATE COMPOUND
    1.
    发明公开
    METHOD FOR PRODUCING METHYLENE DISULFONATE COMPOUND 审中-公开

    公开(公告)号：EP4105205A1

    公开(公告)日：2022-12-21

    申请号：EP21754177.0

    申请日：2021-02-08

    申请人： Sumitomo Seika Chemicals Co., Ltd.

    发明人： ASHIBE, Seiya ,  MORIYAMA, Hirotake

    IPC分类号： C07D327/00

    摘要： Provided is an industrially advantageous method for producing a methylene disulfonate compound easily and inexpensively using fewer raw materials. The method for producing a methylene disulfonate compound of the present invention comprises step A of reacting at least one alkanesulfonic acid compound and sulfur trioxide in the presence of at least one member selected from the group consisting of a sulfoxide compound and a sulfone compound to thereby obtain reactant A comprising an alkanedisulfonic acid compound, and step B of reacting reactant A obtained in step A and a formaldehyde compound in the presence of sulfur trioxide to thereby obtain a methylene disulfonate compound.

    PROCESS FOR PRODUCTION OF METHYLENE DISULFONATE COMPOUND
    5.
    发明授权
    PROCESS FOR PRODUCTION OF METHYLENE DISULFONATE COMPOUND 有权
    生产二甲基亚砜磺酸盐化合物的方法

    公开(公告)号：EP2011791B1

    公开(公告)日：2012-06-27

    申请号：EP07741035.5

    申请日：2007-04-04

    申请人： SUMITOMO SEIKA CHEMICALS CO., LTD.

    发明人： HIYAMA, Takehiro ,  TAKEUCHI, Takeshi ,  MYOKEN, Hidehiko ,  KAGANO, Hirokazu

    IPC分类号： C07D327/00

    CPC分类号： C07D327/00

    摘要： The object is to provide a process for producing a methylene disulfonate compound at a low cost and in a simple manner. Disclosed is a process for producing a methylene disulfonate compound represented by the general formula (2), comprising reacting a sulfonic acid compound represented by the general formula (1) with a formaldehyde compound in the presence of a dehydrating agent: (1) wherein R1 and R2 independently represent a hydrogen atom, or an alkyl group which has 1 to 4 carbon atoms and in which a hydrogen atom may be substituted by a halogen atom; and n represents an integer ranging from 1 to 4, provided that n pieces of R1's and n pieces of R2's may be the same as or different from one another when n represents an integer ranging from 2 to 4; and (2) wherein R1, R2 and n are as defined above.

    摘要翻译： 本发明的目的是提供一种以低成本且简单的方式生产亚甲基二磺酸盐化合物的方法。 本发明公开了一种通式（2）表示的亚甲基二磺酸酯化合物的制备方法，包括在脱水剂存在下使通式（1）表示的磺酸化合物与甲醛化合物反应：（1）其中R1 和R2独立地表示氢原子或具有1至4个碳原子并且其中氢原子可以被卤素原子取代的烷基; 并且n表示1至4的整数，条件是当n表示2至4的整数时，n个R1和n个R2可以彼此相同或不同。 和（2）其中R1，R2和n如上所定义。

    METHOD FOR PRODUCING CYCLIC DISULFONIC ACID ESTER
    7.
    发明公开
    METHOD FOR PRODUCING CYCLIC DISULFONIC ACID ESTER 有权
    VERFAHREN ZUR HERSTELLUNG EINES ZYKLISCHENDISULFONSÄUREESTERS

    公开(公告)号：EP2036899A1

    公开(公告)日：2009-03-18

    申请号：EP07745255.5

    申请日：2007-06-14

    申请人： Wako Pure Chemical Industries, Ltd.

    发明人： OKAMOTO, Kuniaki ,  WATAHIKI, Tsutomu ,  SUMINO, Motoshige

    IPC分类号： C07D327/00

    CPC分类号： C07D327/00 ,  C07D327/06

    摘要： It is an object of the present invention to provide a commercially advantageous method for producing a cyclic disulfonic acid ester with high yield, the present invention discloses a method for producing a cyclic disulfonic acid ester represented by the general formula (3), which comprises reacting a silver alkanedisulfonate represented by the general formula (1) with a dihaloalkane represented by the general formula (2) in a nonpolar solvent.

    Wherein X 1 and X 2 are each independently a chlorine atom, a bromine atom or an iodine atom; and Y and Z are each independently a substituted or unsubstituted alkylene chain which may have a heteroatom in the chain.

    摘要翻译： 本发明的目的是提供一种以高产率制备环状二磺酸酯的商业上有利的方法，本发明公开了一种由通式（3）表示的环状二磺酸酯的制备方法，该方法包括使通式 由通式（1）表示的烷撑二磺酸烷基酯与通式（2）表示的二卤代烷烃在非极性溶剂中反应。 其中X 1和X 2各自独立地为氯原子，溴原子或碘原子; 并且Y和Z各自独立地是在链中可以具有杂原子的取代或未取代的亚烷基链。