| 摘要 |
5-17276/+ Sulfamoylphenylureas The N-acylsulfamoylphenylureas of formula I below are suitable as counter-agents (antidotes or safeners) for protecting cultivated plants from the phytotoxic action of herbicides. Suitable crops are preferably cereals, soybeans, sorghum, maize and rice, and suitable herbicides are sulfonylureas, chloroacetanilides and aryloxyphenoxypropionic acid derivatives. The N-acylsulfamoylphenylureas have the formula I (I) wherein A is a radical selected from the group , , , or , each of R1 and R2, independently of the other, is hydrogen, C1-C8alkyl, C3-C8cycloalkyl, C3-C6alkynyl, C3-C6alkynyl, or C1-C4alkyl substituted by C1-C4alkoxy or by or R1 and R2 together form a C4-C6alkylene bridge, or a C4-C6alkylene bridge interrupted by oxygen, sulfur, SO, SO2, NH or by -N(C1-C4alkyl)-, R3 is hydrogen or C1-C4alkyl, each of Ra and Rb , independently of the other, is hydrogen, halogen, cyano, nitro, trifluoromethyl, C1-C4alkyl, C1-C4alkoxy, C1-C4alkylthio, C1-C4alkylsulfinyl, C1-C4alkylsulfonyl, -COORj, -CONRkRm, -CORn, -SO2NRkRm or -OSO2-C1-C4alkyl, or Ra and Rb together form a C3-C4alkylene bridge, which can be substituted by halogen or by C1-C4alkyl, or a C3-C4alkenylene bridge, which can be substituted by halogen or by Cl-C4alkyl, or a C4alkadienylene bridge which can be substituted by halogen or by C1-C4alkyl, and each of Rg and Rh, independently of the other, is hydrogen, halogen, C1-C4alkyl, trifluoromethyl, methoxy, methylthio or -COORj, wherein Rc is hydrogen, halogen, C1-C4-alkyl or methoxy, Rd is hydrogen, halogen, nitro, C1-C4alkyl, C1-C4-alkoxy, C1-C4alkylthio, C1-C4alkylsulfinyl, C1-C4alkylsulfonyl, -COORj or -CONRkRm, Re is hydrogen, halogen, C1-C4alkyl, -COORj, trifluoromethyl or methoxy, or Rd and Re together form a C3-C4alkylene bridge, Rf is hydrogen, halogen or C1-C4alkyl, each of Rx and RY, independently of the other, is hydrogen, halogen, C1-C4alkyl, C1-C4alkoxy, C1-C4alkylthio, -CooR4, trifluoromethyl, nitro or cyano, each of Rj, Rk and Rm, independently of the others, is hydrogen or C1-C4alkyl, Rk and Rm together form a C4-C6alkylene bridge, or a C4-C6alkylene bridge interrupted by oxygen, NH or by -N(C1-C4alkyl)-, and Rn is C1-C4alkyl, phenyl, or phenyl substituted by halogen, C1-C4alkyl, methoxy, nitro or by trifluoromethyl.
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