| 摘要 |
Compounds of general formula (II), wherein R<1>, R<2>, R<3>, R<5> and R<6> are various substituents and including the spiro compounds in which R<4> and R<5> together with the carbon to which they are attached form a substituted or unsubstituted, saturated or partially saturated heterocyclic or carbocyclic ring; and herbicidal compositions or methods which involve such compounds. |
