发明名称 |
Process for the preparation of diphenyl ether compounds |
摘要 |
A process for producing fomesafen from acifluorfen comprises the steps of (a) converting acifluorfen to its acid chloride, (b) coupling the acid chloride so formed with methanesulphonamide to form crude fomesafen and (c) purifying the crude fomesafen, characterized in that each of the steps is carried out in a single common solvent, which is preferably a chloroalkane. Preferably the steps are telescoped together so that there is no isolation of the product for any step until fomesafen is obtained
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申请公布号 |
US2003045754(A1) |
申请公布日期 |
2003.03.06 |
申请号 |
US20020168611 |
申请日期 |
2002.06.20 |
申请人 |
BROWN STEPHEN MARTIN;GOTT BRIAN DAVID;MUXWORTHY JAMES PETER |
发明人 |
BROWN STEPHEN MARTIN;GOTT BRIAN DAVID;MUXWORTHY JAMES PETER |
分类号 |
C07B61/00;C07C51/215;C07C51/48;C07C65/21;C07C201/08;C07C205/59;C07C303/40;C07C303/44;C07C311/51;(IPC1-7):C07C231/02 |
主分类号 |
C07B61/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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