| abstract |
Herbicidal haloacetic acid derivatives of the formula: <IMAGE> (I) and salts thereof, where: A is -N= or -CH=; X is halo; R1 and R2, which may be the same or different, each represent alkyl, alkoxy, haloalkyl, haloalkoxy, halo, alkylamino or dialkylamino; R3 is -CN, -COOR5, -CONR6R7, -CSNH2, -CHO, -CH=Z, -CH(OAlkyl)2, -CH2OH, -CH2OR9, or a substituted or unsubstituted 5- or 6-membered heterocyclic group linked via a ring carbon atom which is between two ring heteroatoms; R4 is H, or a substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, aryl or aralkyl group; with R5, R6, R7, R9,and Z as defined in the specification. |