abstract |
Compounds of the formula I <IMAGE> wherein R and R<1> each independently is an alkyl, mono-or polyhaloalkyl, alkenyl or alkynyl group of up to four carbon atoms, A is a C1 to C3 alkyl group, J is a nitrogen-containing heterocyclic group as defined in the specification and R<2> has the meaning defined in the specification, are useful as herbicides. |