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公开(公告)号：US4000156A
公开(公告)日：1976-12-28
申请号：US582225
申请日：1975-05-30
IPC分类号： C07D231/52 , G03C7/384 , C07D231/08
CPC分类号： G03C7/384 , C07D231/52
摘要： A method is described for the preparation of a 1-substituted 4-methyl-2-pyrazolin-5-one by catalytic hydrogenation under pressure and simultaneous methylation by means of paraformaldehyde of the appropriate 1-substituted 2-pyrazolin-5-one in a medium of an inert organic solvent comprising ammonium acetate.
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2.发明授权Photographic material containing 3-anilino-5-pyrazolylalkylcarbonate or arylcarbonate couplers 失效含有3-苯胺基-5-吡唑基烷基碳酸酯或芳基碳酸酯成色剂的摄影材料
公开(公告)号：US4062683A
公开(公告)日：1977-12-13
申请号：US690584
申请日：1976-05-27
申请人： Marcel Jacob Monbaliu , Raphael Karel Van Poucke , Roger Henri Vrydaghs , Hans-Heinrich Credner , Ernst Meier
发明人： Marcel Jacob Monbaliu , Raphael Karel Van Poucke , Roger Henri Vrydaghs , Hans-Heinrich Credner , Ernst Meier
CPC分类号： C07D231/52 , G03C7/384
摘要： 3-Anilino-5-pyrazolyl alkylcarbonates and arylcarbonates are described for use in silver halide color photography as color coupler precursor compounds containing no active methylene group so that they do not take part in undesirable side-reactions before color development.
摘要翻译： 描述了3-苯胺基-5-吡唑基烷基碳酸酯和芳基碳酸酯用于卤化银彩色摄影中，作为不含活性亚甲基的颜色成色剂前体化合物，使得它们在显色前不参与不期望的副反应。
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3.发明授权
公开(公告)号：US4061498A
公开(公告)日：1977-12-06
申请号：US690583
申请日：1976-05-27
申请人： Marcel Jacob Monbaliu , Marc Godfried Mannens , Raphael Karel Van Poucke , Hans-Heinrich Credner , Ernst Meier
发明人： Marcel Jacob Monbaliu , Marc Godfried Mannens , Raphael Karel Van Poucke , Hans-Heinrich Credner , Ernst Meier
摘要： 2-Acyl-3-pyrazolin-5-one couplers are provided for use in color photography which upon color development form 2-pyrazolin-5-one couplers capable of coupling with the oxidation products of the color developing agent.
摘要翻译： 提供2-酰基-3-吡唑啉-5-酮成色剂用于彩色摄影，其在显影后能够与彩色显影剂的氧化产物偶联的2-吡唑啉-5-酮成色剂。
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