abstract |
Novel 3,4,4-trifluorobutenoic acid derivatives of the formula <IMAGE> wherein Q is -(C=W)-R2 wherein W is O or S, and R2 is an aliphatic or aromatic group when W=O; -OR50; -SR50; or -NR50R60 wherein R60 is hydrogen or R50; NR7R8; a heterocyclic group; phenyl substituted by alkyl; or any agronomically acceptable salt thereof having usefulness as nematocides, insecticides and acaricides. |