2-cyano-1,3-dione herbicides

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 317/32 (2006.01) A01N 37/42 (2006.01) A01N 41/10 (2006.01) C07C 317/44 (2006.01) C07C 317/46 (2006.01) C07C 323/62 (2006.01) C07C 323/63 (2006.01) C07C 323/65 (2006.01)

Patent

CA 2059607

Compounds of formula: (see figure I) wherein: R represents an optionally substituted alkyl or an optionally substituted cycloalkyl group;~ R1 represents halogen, hydrogen, nitro, -O(CH2)m OR5, cyano, -SR5, R5 or alkyl substituted by OR5; R2 and R3 represent a halogen, hydrogen, R5, alkyl substituted by -OR5, nitro, cyano, -OR5 or -CO2R5; R4 and R5 represent an optionally substituted alkyl group; n represents zero, 1 or 2 and m represents an integer from 1 to 3; and agriculturally acceptable salts of enolic tautomeric forms thereof are useful as herbicides.

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