C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 49/813 (2006.01) A01N 39/00 (2006.01) A01N 41/10 (2006.01) C07C 39/26 (2006.01) C07C 49/84 (2006.01) C07C 65/03 (2006.01) C07C 205/45 (2006.01) C07C 205/59 (2006.01) C07C 317/24 (2006.01)
Patent
CA 2003172
Herbicidal compounds of the structural formula (see formula I) wherein X is oxygen or sulfur; R is chlorine or bromine; R1 is hydrogen or C1-C4 alkyl; R2 is hydrogen or C1-C4 alkyl; R3 is hydrogen or C1-C4 alkyl; R4 is hydroxy, hydrogen or C1-C4 alkyl; or R3 and R4 together are carbonyl (=0) with the proviso that R1, R2, R5 and R6 are all C1-C4 alkyl; R5 is hydrogen or C1-C4 alkyl; R6 is hydrogen, C1-C4 alkyl, C1-C4 alkylthio, or C1-C4 alkylsulfonyl, with the proviso that when R6 is C1-C4 alkylthio or C1-C4 alkylsulfonyl. then R3 and R4 are not together carbonyl; R7 is methyl or ethyl; and R8 is (1) halogen; (2) nitro; or (3) R b SO n- wherein n is the integer 0 or 2; and R b is (a) C1-C3 alkyl; and their salts.
Gowling Lafleur Henderson Llp
Zeneca Ag Products Inc.
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