| 摘要 |
They correspond to the formula: <IMAGE> in which: X is an oxygen or sulphur atom, Y is a hydrogen atom or an alkyl radical (C1-C4), Z is a halogen atom or an alkyl (C1-C6), cycloalkyl (C5-C7), alkoxy (C1-C4) or phenyl radical, n is a number equal to 0, 1, 2 or 3, R1 is a hydrogen atom or an alkyl radical (C1-C4) and R2 and R3, which are identical or different, each represent a hydrogen atom or an alkyl (C1-C6), alkenyl (C2-C4) or alkynyl (C2-C4) radical, or together form a heterocyclic ring possessing from 5 to 6 ring members and optionally containing, in addition to the nitrogen atom, an oxygen or sulphur atom as a hetero-atom. These compounds can be used for selectively destroying weeds in crops such as maize, soya, cotton, sunflower, rice and horse bean. |
