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    • 1. 发明专利
    • Viologen derivative and its preparation
    • VIOLOGEN衍生物及其制备
    • JPS5944379A
    • 1984-03-12
    • JP15522982
    • 1982-09-08
    • Hitachi LtdYuki Gosei Yakuhin Kogyo Kk
    • TAKEDA YUUICHIMURAO KENJIMORI YASUKIMORISHITA YASUSADAITOU KAZUOKANO KATSUHIKONAOI YOSHITAKASAKAI KOUJI
    • C09K9/02C07D401/14C09K9/00G02F1/15G02F1/17
    • NEW MATERIAL:A compound shown by the formula I [R is group shown by the formula II, group shown by the formula III (n is 1W5); X
      1 and X
      2 are halogen].
      EXAMPLE: 4, 4'-Bis{1', 2-dimethyl-2'[(1-methyl-2(1H)-quinolylidene)methyl]-4, 4'-bipyridinium=bromide=iodide-1-(3-propoxycarbonyl)}-2,2'-bipyridine.
      USE: Useful as a colorant in electrochromic display element. Capable of providing dichromatic display.
      PROCESS: A compound shown by the formula IV is reacted with a compound shown by the formula X
      2 -R-X
      2 in a solvent such as butanol, acetone, etc. at room temperature W160°C for 5hrW5 days, to give a compound shown by the formula I . The amount of the compound shown by the formula IV is 2W10mol based on 1mol of the compound shown by the formula X
      2 -R-X
      2 .
      COPYRIGHT: (C)1984,JPO&Japio
    • 新物质:由式I表示的化合物[R为式II所示的基团,由式III表示的基团(n为1-5); X1和X2是卤素]。 实施例:4,4'-双{1',2-二甲基-2'[(1-甲基-2(1H) - 喹喔啉基)甲基] -4,4'-联吡啶鎓=溴化物=碘化-1- 丙)} - 2,2'-联吡啶。 用途:用作电致变色显示元件中的着色剂。 能够提供二色显示。 方法:将式IV化合物与式X2-R-X2所示的化合物在溶剂如丁醇,丙酮等中,室温-160℃反应5小时-5天,得到 式I所示的化合物。 式Ⅳ所示化合物的量为2-10mol,基于1mol式X2-R-X2所示的化合物。