Esters of the formulae
and their agriculturally suitable salts,
where
R is CO2CH3 or CO2C2H5;
R, is H, Cl or CF3;
R2 is C1-C3 alkoxy, amino or substituted amino;
are useful to mitigate damage to crops caused by sulfonylurea herbicides. The compounds may be applied in various ways, e.g. in admixture with the herbicide or as a dressing on the crop seed.
The novel compounds may be made by reacting the appropriate benzenesulfonyl orthiophenesulfonyl isocyanate with an appropriate amine or alcohol.
式中的
酯类
及其农业上适用的盐类、
其中
R 是 CO2CH3 或 CO2C2H5;
R 是 H、Cl 或
CF3
R2 是 C1-C3 烷氧基、
氨基或取代
氨基;
可用于减轻
磺酰脲类除草剂对作物造成的损害。这些化合物可以多种方式施用,例如与
除草剂混合施用或作为敷料敷在作物种子上。
新型化合物可通过将适当的苯磺酰基邻苯磺酰基
异氰酸酯与适当的胺或醇反应制成。