C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/252, 260/259
C07D 239/28 (2006.01) A01N 47/36 (2006.01) C07D 251/12 (2006.01) C07D 295/096 (2006.01) C07D 521/00 (2006.01)
Patent
CA 1204113
Title HERBICIDAL SULFONAMIDES Abstract of the Disclosure o-Haloalkylbenzene sulfonylureas, of formula Image wherein L is Cl, Br, NR3R4, NR3R4, NR3R4R4', N(R4)C(O)R5, N(R4)C(O)NHR6 or N(R4)C(O)OR7; R is H, F, Cl, Br, NO2, CF3, C1-C3 alkyl or C1-C3 alkoxy; R1 is H, C1 or C1-C4 alkyl; R2 is H or CH3; R3 is H, C1-C4 alkyl or OCH3; R4 is H or C1-C4 alkyl; R3 and R4 can be taken together to form -(CH2)4-, -(CH2)5- or -(CH2)2O(CH2)2-; R4' is H, CH3 or CH2CH3; R5 is C1-C4 alkyl optionally substituted with 1-3 atoms of F, Cl or Br, or C3-C4 alkenyl; R6 is H, C1-C4 alkyl or C3-C4 alkenyl; R7 is C1-C4 alkyl; R8 is H, CH3 or OCH3; W is O or S; and A is a substituted cyclic radical, provided that when W is S, then R8 is H, are useful as herbicides.
381477
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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