N,N'-DIARYLUREA DERIVATIVE, MANUFACTURING METHOD THEREOF, AND THERMOSENSITIVE RECORDING MATERIAL USING SAME

    公开(公告)号:EP3677569A1

    公开(公告)日:2020-07-08

    申请号:EP18851961.5

    申请日:2018-08-10

    申请人: Sanko Co., Ltd.

    摘要: The present invention relates to an N,N'-diurea derivative represented by the following general formula (1) and a method for producing the same. In addition, the present invention relates to a thermosensitive recording material in which a thermosensitive recording layer including a basic dye which is colorless or lightly colored at room temperature and a developer capable of developing color upon contact with the basic dye by heating is provided on a base sheet, wherein the developer is the N,N'-diurea derivative represented by the following general formula (1):

    (wherein R2 is an alkyl group, an aralkyl group, or an aryl group; and A1 is a hydrogen atom or an alkyl group).

    TYROSINE DERIVATIVE AND MANUFACTURING METHOD FOR TYROSINE DERIVATIVE
    4.
    发明公开
    TYROSINE DERIVATIVE AND MANUFACTURING METHOD FOR TYROSINE DERIVATIVE 有权
    TYROSINDERIVAT UND HERSTELLUNGSVERFAHRENFÜRTYROSINDERIVAT

    公开(公告)号:EP2940007A4

    公开(公告)日:2016-01-13

    申请号:EP13869779

    申请日:2013-12-24

    摘要: The objective of the present invention is to provide a tyrosine derivative which is useful as a melatonin MT 1 receptor antagonist, and a method for producing a specific tyrosine derivative with high yield by efficiently introducing an iodine atom at the para position of the phenolic hydroxy group in the benzene ring of tyrosine with good regioselectivity. The tyrosine derivative of the present invention is characterized in being represented by the following formula (I) : wherein R 1 is a protective group of the amino group and the like; R 2 is a protective group of the carboxy group and the like; R 3 is a hydrogen atom and the like; R 4 is a halogen atom and the like; A is -(CH 2 ) l -[Z(CH 2 ) m ] n -; X is a leaving group.

    摘要翻译: 本发明的目的是提供可用作褪黑激素MT 1受体拮抗剂的酪氨酸衍生物,以及通过在酚羟基的对位有效引入碘原子而以高产率制备特异性酪氨酸衍生物的方法 在酪氨酸苯环中具有良好的区域选择性。 本发明的酪氨酸衍生物的特征在于由下式(I)表示:其中R 1是氨基的保护基等; R 2是羧基等的保护基; R 3为氢原子等; R 4是卤素原子等; A是 - (CH 2)l - [Z(CH 2)m] n - ; X是离职小组。

    ADDITION REACTION TO FLUOROALLYLFLUOROSULFATE
    5.
    发明授权
    ADDITION REACTION TO FLUOROALLYLFLUOROSULFATE 有权
    加成反应FLUOROALLYLFLUOROSULFAT

    公开(公告)号:EP2238123B1

    公开(公告)日:2011-07-13

    申请号:EP08866458.6

    申请日:2008-12-17

    摘要: The invention pertains to a process for preparing compounds of formula (I-A) or (I-B) here below: by reaction of perfluoroallylfluorosulfate (FAFS) of formula (II): with at least one hypofluorite of formula (II-A) or (II-B): wherein: RF in formulae (I-A) and (II-A) is a monovalent fluorocarbon C1-C20 group, optionally comprising oxygen catenary atoms, optionally comprising functional groups comprising heteroatoms (e.g. -SO2F groups); R'F in formulae (I-B) and (II-B) is a divalent fluorocarbon C-1-C6 group, preferably a group of formula (III): wherein X1 and X2, equal to or different from each other, are independently a fluorine atom or a C1-C3 fluorocarbon group. The FAFS-hypofluohte adducts of formulae (I-A) and (I-B) can be produced with high selectivity so as to access useful intermediates which can further be reacted taking advantage of the un-modified fluorosulfate group chemistry.