申请人:Kumiai Chemical Industry Co., Ltd.
公开号:US05112385A1
公开(公告)日:1992-05-12
A substituted aryloxyurea of the formula: ##STR1## wherein Ar represents ##STR2## in which X.sup.7 represents a hydrogen atom, a halogen atom, a cyano group, a lower alkoxy group or a trifluoromethyl group, and R.sup.1 and R.sup.2 together form together with carbon and the nitrogen atom to which they are bonded a 4-8 membered heterocyclic ring. The substituted aryloxyureas exhibit an excellent herbicidal efficacy against weeds when applied, for example, to the weeds in a wide range of period from a preemergence stage to a growth stage. The substituted aryloxyureas of the invention have the excellent advantage of maintaining high safety on crops or crop plants in spite of their herbicidal efficacy.
一种替代的芳基氧脲,其化学式为:##STR1## 其中Ar代表##STR2## 其中X7代表氢原子、卤素原子、氰基、低碳基氧基团或三氟甲基基团,R1和R2与它们结合的碳和氮原子一起形成一个4-8个成员的杂环环。这些替代的芳基氧脲在广泛的时间段内,例如在草杂草处于萌芽期到生长期时施用时,表现出优异的除草效果。本发明的替代芳基氧脲具有在农作物或作物植物上保持高安全性的优异优势,尽管它们具有除草效果。