| 摘要 |
Pyridylsulphonyl-urea and -thiourea derivs. of formula (I) and their salts are new where R1 = SiMe3, OSO2NR4R5, NR6R7 or I; R2 = H, 1-3C(halo)alkyl, halo, NO2, CN, 1-3C(halo)alkoxy, 1-3C alkylS(O)m, 1-3Calkoxy(1-3C)alkyl, 1-3C alkoxycarbonyl, mono- or di(1-3C)alkylamino, SO2NRaRb or C(O)NRaRb; Ra, Rb = H, 1-3C alkyl, 3-4C alkenyl or propargyl; or Ra + Rb = (CH2)4, (CH2)5 or CH2CH2OCH2CH2; R3 = H or Me; R5 = H, 1-3C alkyl, 3-4C alkenyl or propargyl; R4 = H, 1-3C alkyl, 3-4C alkenyl, 1-3C alkoxy or propargyl; or R4 + R5 = (CH2)4, (CH2)5 or CH2CH2OCH2CH2; R6 = H, 1-4C alkyl, 1-4C alkylsulphonyl, 3-4C alkenyl or 3-4C phenylsulphonyl, opt. ring substd. by one or more halo, alkyl and/or 1-4C alkoxy R7 = 1-4C alkylsulphonyl; phenylsulphonyl, opt. substd. as above; n = 0 or 1; m = O, 1 or 2; w = O or S; A = a gp. of formula (i)-(viii): X = H or halo; 1-3C alkyl or 1-3C alkoxy both opt. substd. by one or more halo or 1-3C alkoxy; Y = H; 1-3C alkyl, 1-3C alkoxy or 1-3C alkylthio, all opt. substd. by one or more halo or by one or two 1-3C alkoxy or 1-3C alkylthio; NR8R9, 3-6C cycloalkyl, 2-4C alkenyl, 2-4C alkynyl, 3-4C alkenyloxy or 3-4C alkynyloxy; Z = CH or N; R8, R9 = H, 1-3C alkyl or 3-4C alkenyl; X1 = Me, OMe, OEt or OCHF2; Y1 = O or CH2; X2 = Me, Et or CH2CF. Y2 = OMe, OEt, SEt, Me or Et; X3 = Me or OMe; Y3 = H or Me; X4 = Me, OMe, OEt, CH2OCH3 or Cl; Y4 = Me, OMe, OEt or Cl; Y5 = Me, Et, OMe or Cl. USE - (I) are herbicides and plant growth regulators. They are active against a wide range of mono- and dicotyledonous weeds. They may opt. be used in combination with other agents, e.g. insecticides, acarcides, herbicides, fungicides, growth regulators or fertilisers. (I) are applied in doses of 0.001-10 (esp. 0.005-5) kg/ha. |
