发明授权
- 专利标题: Process for producing 3-anilino-5-pyrazolones
- 专利标题(中): 3-苯胺基-5-吡唑啉酮的制备方法
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申请号: US519310申请日: 1974-10-30
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公开(公告)号: US3979412A公开(公告)日: 1976-09-07
- 发明人: Atsuaki Arai , Daijiro Nishio , Mitsugu Tanaka , Yoshikazu Fujita , Hisao Suzuki
- 申请人: Atsuaki Arai , Daijiro Nishio , Mitsugu Tanaka , Yoshikazu Fujita , Hisao Suzuki
- 申请人地址: JA Minami-ashigara
- 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: JA Minami-ashigara
- 优先权: JA48-121955 19731030
- 主分类号: G03C7/38
- IPC分类号: G03C7/38 ; C07D231/52 ; G03C7/384
摘要:
A process for producing a 3-anilino-5-pyrazolone which comprises reacting a .beta.-anilino-.beta.-alkoxy-acrylate with a hydrazine in the presence of a compound having a pKa of about 8 up to about 14.
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