Patent ID: 7851411

Claim:
An α-cyanoacrylate of formula I where: R 1 is OR a wherein R a is hydrogen, C 1 -C 6 -alkyl which is partially or fully halogenated and/or is substituted by a substituent selected from the group consisting of: hydroxy, cyano, C 3 -C 6 -cycloalkyl, three- to six-membered heterocyclyl, C 1 -C 6 -haloalkoxy, C 1 -C 6 -alkylthio, C 1 -C 6 -haloalkylthio, C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -haloalkylsulfinyl, C 1 -C 6 -alkylsulfonyl, C 1 -C 6 -haloalkylsulfonyl, (C 1 -C 4 )alkoxycarbonyl, aminocarbonyl, (C 1 -C 6 )alkylaminocarbonyl and di(C 1 -C 6 )alkylaminocarbonyl; is branched C 3 -C 6 -alkyl, branched C 4 -C 6 -alkenyl, C 3 -C 6 -alkynyl, C 3 -C 6 -cycloalkyl, four- to six-membered heterocyclyl, aryl, phenyl(C 1 -C 4 )alkyl or (C 1 -C 6 )alkylimino; is NR b R c wherein R b is hydrogen, C 1 -C 6 -alkyl which may be partially or fully halogenated and/or may be substituted by a substituent selected from the group consisting of: hydroxy, cyano, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy, C 1 -C 6 -alkylthio, C 1 -C 6 -halogenalkylthio, C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -halogenalkylsulfinyl, C 1 -C 6 -alkylsulfonyl and C 1 -C 6 -halogenalkylsulfonyl; is C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl; R c is hydrogen, C 1 -C 6 -alkyl which may be partially or fully halogenated and/or may be substituted by a substituent selected from the group consisting of: hydroxy, cyano, C 3 -C 6 -cycloalkyl, three- to six-membered heterocyclyl, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy, C 1 -C 6 -alkylthio, C 1 -C 6 -haloalkylthio, C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -haloalkylsulfinyl, C 1 -C 6 -alkylsulfonyl, C 1 -C 6 -haloalkylsulfonyl, (C 1 -C 4 )alkoxycarbonyl, aminocarbonyl, (C 1 -C 6 )alkylaminocarbonyl and di(C 1 -C 6 )alkylaminocarbonyl; is C 3 -C 6 -alkenyl, C 3 -C 6 -alkynyl, C 3 -C 6 -cycloalkyl, four- to six-membered heterocyclyl, aryl, phenyl(C 1 -C 4 -)alkyl or (C 1 -C 6 )alkylimino; or R b and R c together from a 1,4-butanediyl-, 1,5-pentanediyl- or 1,6-hexanediyl-chain, wherein each of the chains may be substituted by one or more C 1 -C 6 -alkyl groups; or is SR d wherein R d has the same meaning as R c ; R 2 is C 1 -C 6 -alkyl which may be partially or fully halogenated and/or may be substituted by a substituent selected from the group consisting of: cyano, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy, C 1 -C 6 -alkylthio, C 1 -C 6 -haloalkylthio, C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -haloalkylsulfinyl, C 1 -C 6 -alkylsulfonyl and C 1 -C 6 -haloalkylsulfonyl; is C 2 -C 6 -alkenyl or C 2 -C 6 -alkynyl; R 3 is C 2 -C 6 -alkyl or C 1 -C 6 -alkyl which is partially or fully halogenated and/or is substituted by a substituent selected from the group consisting of: cyano, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy, C 1 -C 6 -alkylthio, C 1 -C 6 -haloalkylthio, C 1 -C 6 -alkylsulfinyl, C 1 -C 6 -haloalkylsulfinyl, C 1 -C 6 -alkylsulfonyl and C 1 -C 6 -haloalkylsulfonyl; is C 2 -C 6 -alkenyl or C 2 -C 6 -alkynyl; R 4 is hydrogen, halogen, cyano or C 1 -C 6 -alkyl, or an agriculturally useful salt thereof.