| 摘要 |
<p>Urea derivs. of formula (I) and their agriculturally acceptable salts are new, where R = 1-4C alkyl, CH2Z or CH2CH2R2; Z = vinyl, ethynyl or cyclopropyl; R1 = 1-2C alkyl, 1-2C haloalkyl, CH2CN, CH2OMe, 1-3C alkoxy, 1-3C alkylthio, phenylthio or NR3R4; R2 = 1-2C alkoxy, 1-2C alkylthio, CN or halo; R3 and R4 = H or Me; X = NHMe, NMe2 or N(Me)(OMe); provided that when R1 = OEt or CH2OMe then R is other than Me.</p> |
