申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0024215A1
公开(公告)日:1981-02-25
Compounds having the formula
R is
R1 is
or
R2 is halogen, nitro or various organic groups;
R3 is hydrogen, halogen, alkyl or methoxy;
R4 is halogen, nitro, methyl, alkoxy, carboxylic ester or methylthio;
W is Cl, Br or OR12, where R12 is various organic groups;
X is CH3 or OCH3;
Y is CH3, alkoxy or substituted alkoxy;
Z is N or CH;
O is CH2 or O; and
A is CH3 or CH3O ;
and their agricultrally acceptable salts, exhibit herbicidal activity. Some may have utility as plant growth modifiers. For these uses the compounds may be formulated into compositions in conventional manner.
The compounds can be prepared e.g. from the corresponding sulfonylurea
by reaction with Ph3P and CCl4, or CBr4 to obtain a compound (I) wherein W is Cl or Br, and optionally reacting this product with an alkali metal alkoxide to obtain a compound wherein W is OR12.
具有以下式子的化合物
R 是
R1 是
或
R2 是卤素、硝基或各种有机基团;
R3 是氢、卤素、烷基或甲氧基
R4 是卤素、硝基、甲基、烷氧基、羧酸酯或甲硫基;
W 是 Cl、Br 或 OR12,其中 R12 是各种有机基团;
X 是 CH3 或 OCH3
Y 是 CH3、烷氧基或取代的烷氧基;
Z 是 N 或 CH;
O 是 CH2 或 O;以及
A 是 CH3 或 CH3O ;
及其农业上可接受的盐类具有除草活性。有些化合物还可用作植物生长调节剂。对于这些用途,可按常规方法将这些化合物配制成组合物。
这些化合物可以通过与 Ph3P 和 C 反应,从相应的磺酰脲中制备,例如
与 Ph3P 和 CCl4 或 CBr4 反应,得到 W 为 Cl 或 Br 的化合物 (I),再将该产物与碱金属烷氧化物反应,得到 W 为 OR12 的化合物。