发明授权
US4755614A Preparation of herbicides containing a phosphonate group from
intermediate benzoxazines
失效
从中间体苯并恶嗪制备含有膦酸酯基团的除草剂
- 专利标题： Preparation of herbicides containing a phosphonate group from intermediate benzoxazines
- 专利标题（中）： 从中间体苯并恶嗪制备含有膦酸酯基团的除草剂
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申请号： US841588申请日： 1986-03-20
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公开(公告)号： US4755614A公开(公告)日： 1988-07-05
- 发明人: Jean-Pierre Corbet
- 申请人： Jean-Pierre Corbet
- 申请人地址： FRX Lyons
- 专利权人： Rhone-Poulenc Agrochimie
- 当前专利权人： Rhone-Poulenc Agrochimie
- 当前专利权人地址： FRX Lyons
- 优先权： FRX8504433 19850321
- 主分类号： C07D265/16
- IPC分类号： C07D265/16 ; C07F9/38 ; C07F9/40
摘要：
Preparation of intermediates for herbicides of formula ##STR1## by the reaction of organic phosphites with benzoxazines of formulaBzx--CH.sub.2 --CO--Y (II)in whichBzx denotes the radical of formula: ##STR2## X is a usual substituent of phenols n is an integer from 0 to 4R.sup.1 and R.sup.2 are H or such that OR.sup.1 and OR.sup.2 are hydrolyzableY is --OM or --NR.sup.3 R.sup.4M is H or is such that COOM is a salt or an esterR.sup.3 and R.sup.4 are H or a hydrocarbon radical, and one of them can be R.sup.5 --SO.sub.2 --, andR.sup.5 is a hydrocarbon radical, substiuted if appropriate. Products obtained by the process and their use as herbicides.
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