METHOD FOR PREPARING A TRIFLUOROMETHANESULFINIC ACID SALT
    14.
    发明申请
    METHOD FOR PREPARING A TRIFLUOROMETHANESULFINIC ACID SALT 有权
    制备三氟甲磺酸盐的方法

    公开(公告)号:US20110034724A1

    公开(公告)日:2011-02-10

    申请号:US12745196

    申请日:2008-11-25

    IPC分类号: C07C303/44

    CPC分类号: C07C313/04

    摘要: The present invention relates to a method for preparing a salt of trifluoromethanesulphinic acid termed “triflinic acid”. More specifically, the invention relates to a method for preparing a highly pure triflinic acid salt. The method of the invention for preparing a highly pure triflinic acid salt, starting from an aqueous mixture comprising the latter combined with a trifluoroacetic acid salt and saline impurities resulting from the method for preparing same, is characterized in that said mixture is subjected to the following operations: first controlled acidification such that the trifluoroacetic acid salt is essentially released in the acid form thereof, the majority of the triflinic acid remaining in a salified form, optional separation of the salts originating from the acid having been used for the acidification and recovery of an aqueous phase, separation of the trifluoroacetic acid from the separated aqueous phase comprising the alkaline salt of triflinic acid, trifluoroacetic acid, triflinic acid and the excess strong acid, therefore resulting in an aqueous phase depleted of trifluoroacetic acid but comprising the alkaline salt of triflinic acid, recovery of the alkaline salt of triflinic acid from the aqueous phase.

    摘要翻译: 本发明涉及一种称为“三氟酸”的三氟甲磺酸的盐的制备方法。 更具体地说,本发明涉及制备高纯度三氟酸盐的方法。 本发明制备高纯度三氟酸盐的方法,其特征在于,将含有后者与由三氟乙酸盐组合的含水混合物和由其制备方法产生的盐水杂质开始混合,其特征在于所述混合物经受以下 操作:首先控制酸化,使得三氟乙酸盐基本上以其酸形式释放,大部分三氟氯酸保持为盐化形式,任选分离源自酸的盐,用于酸化和回收 水相,从分离的水相中分离三氟乙酸,其中包含三氟酸,三氟乙酸,三烯丙酸和过量的强酸的碱性盐,从而导致三氟乙酸的水相贫化,但是包含三氟甲磺酸的碱性盐 酸,三氟酸盐碱性盐的回收率 水相。

    Process for preparing a sulfinate
    18.
    发明授权

    公开(公告)号:US06399815B2

    公开(公告)日:2002-06-04

    申请号:US09891434

    申请日:2001-06-26

    申请人: Takatugu Suzuki

    发明人: Takatugu Suzuki

    IPC分类号: C07C31302

    CPC分类号: C07C313/04

    摘要: Disclosed is a process to prepare a sulfinate, which is useful for preparing a synthetic intermediate of an organic compound, especially for a color coupler, characterized by reducing a sulfonyl chloride with a sulfite or a hydrogensulfite in the presence of a hydrogenphosphate.

    Process for preparing a sulfinate
    19.
    发明申请
    Process for preparing a sulfinate 失效
    亚磺酸盐的制备方法

    公开(公告)号:US20020013493A1

    公开(公告)日:2002-01-31

    申请号:US09891434

    申请日:2001-06-26

    发明人: Takatugu Suzuki

    IPC分类号: C07C409/44

    CPC分类号: C07C313/04

    摘要: Disclosed is a process to prepare a sulfinate, which is useful for preparing a synthetic intermediate of an organic compound, especially for a color coupler, characterized by reducing a sulfonyl chloride with a sulfite or a hydrogensulfite in the presence of a hydrogenphosphate.

    摘要翻译: 公开了一种制备亚磺酸盐的方法,其可用于制备有机化合物的合成中间体,特别是用于着色成色剂,其特征在于在磷酸氢盐存在下用亚硫酸盐或亚硫酸氢盐还原磺酰氯。

    Process for producing perfluoroalkanesulfinate
    20.
    发明申请
    Process for producing perfluoroalkanesulfinate 审中-公开
    制备全氟烷基亚磺酸盐的方法

    公开(公告)号:US20010031891A1

    公开(公告)日:2001-10-18

    申请号:US09788655

    申请日:2001-02-21

    IPC分类号: C07C39/04

    CPC分类号: C07C313/04

    摘要: The invention relates to a process for producing an alkali metal salt of a perfluoroalkanesulfinic acid. This process includes the step of bringing a perfluoroalkanesulfonic fluoride into contact with an alkali metal salt of sulfurous acid in the presence of water. This process is useful, since this perfluoroalkanesulfonic fluoride (e.g., trifluoromethanesulfonic fluoride) is easily available.

    摘要翻译: 本发明涉及一种全氟烷基亚磺酸的碱金属盐的制备方法。 该方法包括在水存在下使全氟烷基磺酰氟与亚硫酸的碱金属盐接触的步骤。 该方法是有用的,因为这种全氟烷基磺酸氟化物(例如三氟甲磺酸氟化物)容易获得。