发明授权
- 专利标题: Pyrazoloazole series couplers
- 专利标题(中): 吡唑啉系列偶联剂
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申请号: US549667申请日: 1990-07-06
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公开(公告)号: US5118812A公开(公告)日: 1992-06-02
- 发明人: Shigeki Yokoyama , Tadahisa Sato , Keizo Kimura , Nobuo Furutachi , Osamu Takahashi
- 申请人: Shigeki Yokoyama , Tadahisa Sato , Keizo Kimura , Nobuo Furutachi , Osamu Takahashi
- 申请人地址: JPX Kanagawa
- 专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人地址: JPX Kanagawa
- 优先权: JPX61-292752 19861209; JPX62-195188 19870806
- 主分类号: C07D471/04
- IPC分类号: C07D471/04 ; G03C7/30 ; G03C7/305 ; G03C7/38
摘要:
A pyrazoloazole series coupler having the following formula (I) ##STR1## wherein R.sub.1 represents a substituent having a Hammett's substituent constant .sigma..sub.p of at least 0.6;X represents a hydrogen atom or a group capable of being released by the coupling reaction with the oxidation product of an aromatic primary amine developing agent;Za, Zb and Zc each represents .dbd.CH--, ##STR2## (wherein R.sub.2 represents a hydrogen atom or a substituent), .dbd.N-- or --NH--;one of Za--Zb bond and Zb--Zc bond is a double bond and the other is a single bond;when Zb--Zc is a carbon-carbon double bond, this Zb--Zc may form a part of another aromatic ring;R.sub.1, R.sub.2 or X may be a divalent linking group forming a dimer, or R.sub.1 or R.sub.2 may be a divalent linking group bonded to a polymer main chain to form a polymer, a silver halide photographic material which has at least one layer containing the coupler or a support and a method for processing a silver halide color photographic material with a developer containing an aromatic primary amine developing agent in the presence of the coupler.
公开/授权文献
- US5675012A Process for production of cyanopyridine 公开/授权日:1997-10-07
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