Photochromic material
    3.
    发明授权
    Photochromic material 失效
    光致变色材料

    公开(公告)号:US07057054B2

    公开(公告)日:2006-06-06

    申请号:US10649868

    申请日:2003-08-28

    申请人: Masahiro Irie

    发明人: Masahiro Irie

    IPC分类号: C07D409/00 C07F2/00 C08G75/00

    摘要: A photochromic material having a ring opening quantum yield of 10−3 or lower which does not fade under ambient light is provided. The material comprises a compound belonging to the diheteroarylethene class. The compound has alkoxy group and aryl group on the heteroaryl group.

    摘要翻译: 提供了在环境光下不褪色的具有10 -3或更低的开环量子产率的光致变色材料。 该材料包括属于二杂芳基烯类的化合物。 该化合物在杂芳基上具有烷氧基和芳基。

    Pentafulvene synthesis
    4.
    发明授权
    Pentafulvene synthesis 失效
    五萜烯合成

    公开(公告)号:US6025512A

    公开(公告)日:2000-02-15

    申请号:US226404

    申请日:1999-01-06

    IPC分类号: C07C13/15 C07F17/00 C07F2/00

    CPC分类号: C07C13/15 C07C2101/10

    摘要: This invention relates to a method to produce pentfulvenes comprising combining a partially substituted cyclopentadiene with a carbonyl containing compound and lithium or an alkyl lithium, wherein the partially substituted cyclopentadiene is represented by the formula: ##STR1## wherein the R.sup.1 to R.sup.5 groups are independently hydrogen or a C.sub.1 to C.sub.100 group, provided at least one R group is hydrogen but not more than three R groups are hydrogen.

    摘要翻译: 本发明涉及一种生产pentfulvenes的方法,包括将部分取代的环戊二烯与含羰基化合物和锂或烷基锂组合,其中部分取代的环戊二烯由下式表示:其中R1至R5基团独立地为氢或C1 至C100基团,提供至少一个R基团为氢,但不超过三个R基团为氢。