Herbicidal Fluorophenoxyphenoxypropionates, derivatives thereof and related compounds
申请人:THE DOW CHEMICAL COMPANY
公开号:EP0138359A2
公开(公告)日:1985-04-24
Novel fluorophenoxyphenoxypropionates and derivatives thereof and compounds related thereto possess herbicidal activity selectively in the presence of broadleaf crops. Preemergent and postemergent applications are contemplated.
The compounds are of the formula
wherein
X represents -F, -Cl, -Br, -I, -CF3, -OCF3, -CF2CI, -CF2H or-CF2CCl2H; and
Z represents an organic moiety, the moiety containing N, O or S atoms, a metallic cation, an ammonium cation or an organic amine cation and is, or can be hydrolyzed and/or oxidized in plants or soil to, a carboxyl moiety that is in undissociated and/or dissociated form.
Preferably Z ist
or an agriculturally acceptable salt, amide or ester thereof.
Also provided are novel intermediates of the formula
wherein
Y is OH, NH2 or N2⊕ BF4⊖, as well as herbicidal compositions and a method of controlling weeds by applying to them one or more of the active compounds of the invention.
新型氟苯氧基苯氧基丙酸盐及其衍生物和相关化合物在阔叶作物中具有选择性除草活性。可考虑播前和播后施用。
这些化合物的化学式为
式中
X 代表-F、-Cl、-Br、-I、-CF3、-OCF3、-CF2CI、-CF2H 或-CF2CCl2H;以及
Z 代表有机分子,该分子含有 N、O 或 S 原子、金属阳离子、铵阳离子或有机胺阳离子,并且是或可在植物或土壤中水解和/或氧化为未离解和/或离解形式的羧基。
优选 Z 是
或其农业上可接受的盐、酰胺或酯。
还提供了式中的新型中间体
其中
Y 是 OH、NH2 或 N2⊕ BF4⊖,以及除草组合物和通过向杂草施用一种或多种本发明活性化合物来控制杂草的方法。