| 摘要 |
<p>Compounds of general formula (II), wherein R?1, R2, R3, R5 and R6¿ are various substituents and including the spiro compounds in which R?4 and R5¿ 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.</p> |
