| 摘要 |
A compound of the formula: <IMAGE> wherein R1 is a C4-C7 tertiary alkyl group, X is a halogen atom, R2 is a methyl group or an ethyl group, R3 is a methyl group or an ethyl group, or when R2 and R3 are taken together, they represent a C2-C5 alkylene group, and Y and Z, which may be the same or different, are each a hydrogen atom, a halogen atom, a methyl group or a methoxy group, which is useful as a herbicide. |
