| 摘要 |
Substituted cyanoacetamide derivatives of the general formula (1) and salts thereof, exhibiting excellent herbicidal activity; and preparations containing the derivatives or the salts and being useful as herbicides excellent in crop selectivity wherein R1 and R2 are each hydrogen, nitro, cyano, halogeno, C1-6 alkyl, C1-6 alkylsulfonyl, or the like; R3 is nitro, cyano, halogeno, C1-6 alkyl, or the like; n is 0, 1 or 2; R4 and R5 are each hydrogen, C1-6 alkyl, C1-6 alkoxy, or the like, or alternatively they may be united to form an alkylene chain, a heterocyclic group, or the like; X is oxygen or sulfur; and Z is formyl, di(C1-6 alkoxy)methyl, phenyl, a heterocyclic group, or the like. |
