| abstract |
Salicylaldehyde derivatives and salicylic acid derivatives of the formula I (see formula I) where A is an unsubstituted or substituted phenyl radical, an unsub-stituted or substituted 5-membered heteroaromatic radical having from 2 to 4 nitrogen atoms or two nitrogen atoms and additionally one sulfur or oxygen atom or an unsubstituted or substituted thienyl, pyridyl, naphthyl, quinolyl, indazolyl or benzotriazolyl radical, X is oxygen or sulfur, and the radicals R1 to R4 have the meanings given in the specification, processes and intermediates for their production, and their use as herbicides and bioregulators. |