申请人:Roussel Uclaf
公开号:US04137068A1
公开(公告)日:1979-01-30
Novel ureas of the formula ##STR1## wherein A and B are chlorine or A is chlorine or hydrogen and B is --CF.sub.3, R and R.sub.1 are individually alkyl of 1 to 3 carbon atoms and R.sub.2 is alkyl of 1 to 6 carbon atoms optionally substituted with a halogen having herbicidal properties, particularly useful in cultivated grass crops and their preparation and use.
该公式中的新脲类化合物为##STR1##其中A和B是氯,或者A是氯或氢,B是--CF.sub.3,R和R.sub.1分别是1到3个碳原子的烷基,R.sub.2是1到6个碳原子的烷基,可选择地被具有除草特性的卤素取代,特别适用于栽培的草类作物,以及它们的制备和使用。