发明公开
EP1357118A1 PROCESS FOR PREPARATION OF ESCULETIN COMPOUNDS, ESCULETIN COMPOUNDS AND INTERMEDIATES THEREOF, AND USE OF BOTH
审中-公开
用于生产ESCULETINVERBINDUNGEN，ESCULETINVERBINDUNGEN及其中间体，和这些化合物和中间体的用途
- 专利标题： PROCESS FOR PREPARATION OF ESCULETIN COMPOUNDS, ESCULETIN COMPOUNDS AND INTERMEDIATES THEREOF, AND USE OF BOTH
- 专利标题（中）： 用于生产ESCULETINVERBINDUNGEN，ESCULETINVERBINDUNGEN及其中间体，和这些化合物和中间体的用途
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申请号： EP01272547.9申请日： 2001-12-28
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公开(公告)号： EP1357118A1公开(公告)日： 2003-10-29
- 发明人: NIIMURA, Koichi , KATOHNO, Masataka , SAGAWA, Kazuhiko
- 申请人： Kureha Chemical Industry Co., Ltd.
- 申请人地址： 9-11, Nihonbashi Horidome-cho 1-chome, Chuo-ku Tokyo 103-8552 JP
- 专利权人： Kureha Chemical Industry Co., Ltd.
- 当前专利权人： Kureha Chemical Industry Co., Ltd.
- 当前专利权人地址： 9-11, Nihonbashi Horidome-cho 1-chome, Chuo-ku Tokyo 103-8552 JP
- 代理机构： Minderop, Ralph H., Dr. rer. nat.
- 优先权： JP2000402725 20001228
- 国际公布： WO02053552 20020711
- 主分类号： C07D311/16
- IPC分类号： C07D311/16 ; C07C45/45 ; C07C47/575 ; C07C43/23 ; A01N43/16 ; A01N35/04 ; A01N37/02 ; A01N43/30
摘要：
An esculetin compound, an intermediate thereof, a process for manufacturing an esculetin compound, and an antifungal composition for agriculture and horticulture and an herbicide comprising an esculetin compound or an intermediate thereof are provided. The process for manufacturing an esculetin compound is a low-cost, high-yield, and industrially practicable process, and comprises the following step.
A process for manufacturing an esculetin compound of the formula (2):
characterized by cyclizing a trihydroxybenzaldehyde compound of the formula (1):
in an aprotic polar solvent in the presence of a weak base, with acetic anhydride or the like.
A process for manufacturing an esculetin compound of the formula (2):
characterized by cyclizing a trihydroxybenzaldehyde compound of the formula (1):
in an aprotic polar solvent in the presence of a weak base, with acetic anhydride or the like.
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