| 摘要 |
<p>Novel herbicidal compounds of the general formula I <CHEM> wherein X represents an oxygen or sulphur atom; A represents an optionally substituted alkyl, alkenyl, cycloalkyl, cycloalkenyl, dialkylamino, aryl, heteroaryl, aralkyl or heteroaralkyl group; R<1> represents a hydrogen atom, an optionally substituted alkyl group or an optionally substituted acyl group; and R<2> represents an optionally substituted aralkyl or heteroaralkyl group; together with their preparation, formulation and use.</p> |
