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1. 发明公开

EP0516985A1 Synthesis of squarylium compounds 失效
标题翻译： Synthese von Squaryliumverbindungen。
公开(公告)号：EP0516985A1
公开(公告)日：1992-12-09
申请号：EP92107574.3
申请日：1992-05-05
申请人： POLAROID CORPORATION
发明人： McGowan, Donald A. , Spencer, Thomas K. , Garcia, Paulina P. , Telfer, Stephen J. , Lee, John W. , Zuraw, Michael J.
IPC分类号： C09B57/00 , C09B23/00 , G03G5/06 , C07D345/00 , C07D309/34 , C07D335/02 , C07D335/06 , G11B7/24
CPC分类号： G11B7/247 , C07D309/34 , C07D335/02 , C07D335/06 , C07D345/00 , C09B23/0025 , C09B23/0066 , C09B57/007 , G03G5/0611 , G11B7/246
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Q 1和Q 2各自独立地为吡喃鎓，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，R 1和R 2各自独立地为脂肪族或脂环族基团可以通过在碱的存在下使下式的顺式酸衍生物与式Q 2 CH 2 R 2的化合物反应来制备。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Q 1 CH 2 R 1的化合物缩合来制备，下式的化合物：其中Q 1和R 1如上所定义，X代表氯或溴，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，单酸氯化物单酯或方酸的二酰氯与式Q 1 CH 2 R 1的化合物反应来制备，然后水解所得到的式II化合物的单酰氯或单酯衍生物与母体化合物反应。

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