| abstract |
Beta-amino-alpha-cyanoacrylates of the formula (1) are described where the variables have the following meanings: R 1 is n-alkyl, n-alkenyl or alkoxyalkyl; R2, R3 are alkyl, which may be partially or completely halogenated and / or may carry a substituent of the group consisting of cyano, alkoxy, haloalkoxy, alkylthio, haloalkylthio, C1-6 alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl and haloalkylsulfonyl, alkenyl or alkynyl; or R2 and R3, together with the carbon atom to which they are attached, form a cycloalkyl ring, where one or two non-adjacent CH2 groups may be replaced by oxygen or sulfur, and where the cycloalkyl ring may be replaced by halogen or I rent; R4 is hydrogen, halogen, cyano or alkyl, where the substituents R2, R3 and R4 or two of the radicals R2, R3 and R4 are not, simultaneously, methyl, if R1 is n-alkyl and its salts useful in agriculture , processes and intermediaries for its preparation; and the use of these compounds or compositions comprising these compounds to control unwanted plants. |