Herbicidal 1-alkyl-3-phenylpyridinium salts

C - Chemistry – Metallurgy – 07 – D

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C07D 213/60 (2006.01) A01N 43/40 (2006.01) C07D 213/61 (2006.01) C07D 213/68 (2006.01) C07D 213/69 (2006.01) C07D 213/70 (2006.01) C07D 213/74 (2006.01)

Patent

CA 1115707

X-4508 ABSTRACT Quaternary salts of formula (I): Image (I) wherein R represents methyl or ethyl; R1 represents halo, methoxy, C1-C4 alkylthio benzylthio or dimethylamino; R2 represents hydrogen, phenoxy, phenylthio, C1-C4 alkyl, C1-C4 alkoxy, C1-C4 alkylthio, phenyl or . phenyl monosubstituted with halo, trifluoromethyl, C1-C4 alkyl or C1-C4 alkoxy; R3 represents C1-C4 alkyl, C1-C4 alkoxy, trifluoromethyl or halo; E represents an anion capable of forming a pyridinium salt; and n represents an integer of 1 to 3, are useful herbicides. `

329094

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