发明授权
- 专利标题: Pyridone compounds useful for producing pyridine compounds
- 专利标题(中): 可用于生产吡啶化合物的吡啶酮化合物
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申请号: US11382354申请日: 2006-05-09
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公开(公告)号: US07223862B2公开(公告)日: 2007-05-29
- 发明人: Yoshitomo Tohyama , Takashi Komori , Yuzuru Sanemitsu
- 申请人: Yoshitomo Tohyama , Takashi Komori , Yuzuru Sanemitsu
- 申请人地址: JP Osaka
- 专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人地址: JP Osaka
- 代理机构: Akin Gump Strauss Hauer & Feld LLP
- 优先权: JP2001-234650 20010802; JP2002-088577 20020327
- 主分类号: C07D401/12
- IPC分类号: C07D401/12
摘要:
The present invention provides a process for producing the pyridine compound [d]: [wherein R3 and R4 are as defined below], which has an excellent herbicidal activity, by making a pyridine compound [a]: [wherein R1 represents a C1–C6 alkoxy group, R3 represents a halogen atom, cyano group or nitro group, and R4 ρεπρεσεντσ α ηψδρογεν ατομ ορ ηαλογεν ατομ] ρεαχτ ωιτη αν α-diazoester compound [f]: N2CHCOR1[f] [wherein R1 is defined above] in the presence of an acid.
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