Squarylium compounds, and processes and intermediates for the synthesis of these compounds
    1.
    发明授权
    Squarylium compounds, and processes and intermediates for the synthesis of these compounds 失效
    方酸化合物,以及用于合成这些化合物的方法和中间体

    公开(公告)号:US06482950B1

    公开(公告)日:2002-11-19

    申请号:US08479077

    申请日:1995-06-06

    IPC分类号: C07D47100

    摘要: Squarylium compounds of the formula: wherein Q1 and Q2 are each independently a pyrylium, thiopyrylium, selenopyrylium, benzpyrylium, benzthiopyrylium or benzselenopyrylium nucleus, and R1 and R2 are each independently an aliphatic or cycloaliphatic group, can be prepared by reacting a squaric acid derivative of the formula: with a compound of the formula Q2CH2R2 in the presence of a base. The derivatives of Formula II may be prepared by condensing a 2,3,4,4-tetrahalocyclobut-2-en-1-one with a compound of the formula Q1CH2R1 in the presence of a base to produce a compound of the formula: wherein Q1 and R1 are as defined above, and X represents chlorine or bromine, and hydrolyzing the compound of Formula III. Alternatively, the derivatives of Formula II may be prepared by reacting a diester, monoacid chloride monoester or diacid chloride of squaric acid with a compound of the formula Q1CH2R1 in the presence of a base, followed by hydrolysis of the resultant monoacid chloride or monoester derivative of the compound of Formula II to the parent compound.

    摘要翻译: 下式的方酸化合物:其中Q1和Q2各自独立地是吡喃鎓,硫代吡喃鎓,硒代吡喃鎓,苯并吡喃鎓,苯并硫代吡喃鎓或苯并硒吡喃鎓核,R1和R2各自独立地是脂族或脂环族基团,可以通过将 式中:在碱的存在下使用式Q2CH2R2的化合物。 式II的衍生物可以通过在碱的存在下将2,3,4,4-四卤代环丁-2-烯-1-酮与式Q1CH2R1的化合物缩合来制备下式的化合物:其中 Q1和R1如上定义,X​​表示氯或溴,并水解式III化合物。 或者,式II的衍生物可以通过在碱的存在下使方酸的二酯,单酰氯单酯或二酸氯化物与式Q1CH2R1的化合物反应制备,然后水解所得的单酰氯或单酯衍生物 式II化合物与母体化合物。

    3,3-Di-(indolin-5-yl)-phthalides and naphthalides
    4.
    发明授权
    3,3-Di-(indolin-5-yl)-phthalides and naphthalides 失效
    3,3-二(二氢吲哚-5-基) - 酞菁和萘

    公开(公告)号:US3931227A

    公开(公告)日:1976-01-06

    申请号:US427580

    申请日:1973-12-26

    摘要: This invention relates to a new class of phthalein dyes useful as the color-forming material in either pressure sensitive or heat sensitive mark-forming systems. Such dyes comprise 3,3-disubstituted phthalides and 3,3-disubstituted naphthalides wherein the 3,3 substituents are indolin-5-yl radicals.

    摘要翻译: 本发明涉及一种新型的可用作压敏或热敏标记形成系统中成色材料的酞菁染料。 这样的染料包括3,3-二取代的苯酞和3,3-二取代的萘,其中3,3个取代基是二氢吲哚-5-基。