Phenylalkenylcarboxylic acids and their esters

C - Chemistry – Metallurgy – 07 – D

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260/515.1, 260/4

C07D 209/48 (2006.01) A01N 37/32 (2006.01) A01N 37/46 (2006.01) C07C 229/44 (2006.01)

Patent

CA 1337696

Phenylalkenylcarboxylic acid and esters thereof of the general formula I: Image I where X is hydrogen or fluorine, R1 is hydrogen, C1-C6- alkyl, C5- or C6-cycloalkyl, (C1-C4-alkoxy)-C2-C4-alkyl or (C1-C4-alkylthio)-C2-C4-alkyl; W is a divalent radical -CH=CR4-CH2-; -CH=CR2-CH=CR , Image or, only when X is fluorine, -CH=CY-, where Y is chlorine or bromine, R2 and R3 are each hydrogen or C1-C4-alkyl, and R4 is C1-C4- alkyl, their manufacture, and their use as herbicides.

571876

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