Ureas having herbicidal activity

Details Ureas having herbicidal activity Ureas having herbicidal activity

C - Chemistry, Metallurgy

07

C

260/292, 260/468

C07C 205/38 (2006.01) A01N 47/28 (2006.01) A01N 47/30 (2006.01) A01N 47/38 (2006.01) C07C 275/28 (2006.01) C07C 275/36 (2006.01) C07C 275/64 (2006.01) C07D 295/215 (2006.01)

Patent

CA 1175436

Abstract Novel ureas of the formula I have herbicidal activity and are suitable in small applied amount for selectively combating weeds in cultivated crops of soya-bean, maize and cereals. They are advantageously produced by the isocyanate method and correspond to the formula I Image (I) wherein R1 is an unsubstituted or substituted C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, aralkyl, phenyl, acyl or C1-C4-alkylsulfonyl group or an aminoalkyl group, R2 is hydrogen, halogen, Cl-C4-alkyl or Cl-C4-alkoxy, R3 is hydrogen, halogen, cyano or trifluoromsthyl, R4 is hydrogen, C1-C6-alkyl, C2-C6-alkenyl, C2-C6- alkynyl or C1-C6-alkoxy, R5 is hydrogen, C1-C6-alkyl or C2-C6-alkenyl, or R5 together with R4 and the nitrogen atom to which they are bound also form a 5-6-membered heterocycle, and X is oxygen, sulfur or the sulflnyl or sulfonyl group.

373096

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