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    • 6. 发明授权
    • Pyrrolopyrimidineone compound and heat-sensitive recording material using the same
    • 吡咯并嘧啶酮化合物和使用其的热敏记录材料
    • US06346359B1
    • 2002-02-12
    • US09557871
    • 2000-04-24
    • Hisao YamadaMitsuyuki TsurumiKazunori Nigorikawa
    • Hisao YamadaMitsuyuki TsurumiKazunori Nigorikawa
    • G03C172
    • C07D487/04B41M5/287G03C1/58
    • Disclosed are a pyrrolopyrimidineone compound represented by the following general formula (1) and a heat-sensitive recording material using the pyrrolopyrimidineone compound as a coupler: General formula (1) wherein R1 and R2 each independently represents a hydrogen atom, a halogen atom, an aryl group, an alkyl group, a cyano group, an acyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonyl group, or an arylsulfonyl group; R3 represents an amino group, a substituted amino group, a hydroxyl group, an acyloxy group, an arylcarboxyl group, an alkoxy group, an aryloxy group, an alkylthio group, or an arylthio group; R4 represents a hydrogen atom, a halogen atom, or an electron attracting group whose Hammett substituent constant &sgr;p is 0.2 or more; and L represents a substituent group which can leave when the compound reacts with a diazonium salt. The pyrrolopyrimidineone compound produces a good purple to cyan color hue and a sufficient color density.
    • 公开了由以下通式(1)表示的吡咯并嘧啶酮化合物和使用吡咯并嘧啶酮化合物作为偶联剂的热敏记录材料:通式(1)其中R 1和R 2各自独立地表示氢原子,卤素原子, 芳基,烷基,氰基,酰基,氨基甲酰基,烷氧基羰基,芳氧基羰基,烷基磺酰基或芳基磺酰基; R3表示氨基,取代氨基,羟基,酰氧基,芳基羧基,烷氧基,芳氧基,烷硫基或芳硫基; R4表示氢原子,卤素原子或哈米特取代基常数sigmap为0.2以上的吸电子基团; L表示当化合物与重氮盐反应时可以离开的取代基。 吡咯并嘧啶酮化合物产生良好的紫色至青色色调和足够的色密度。