Salicylic acid derivatives as selective herbicides

Abstract From the Canadian patent

Salicylic acid derivatives and sulfur analogs thereof of the formula I, where, R is halogen, alkyl, haloalkyl alkoxy, haloalkoxy and/or alkylthio;, n is 1 2 or 3 or, in the case of halogen as substituents 1, 2, 3, 4, or 5, R1 is a radical, where m is 0 or 1 and R6 and R7 have the following meanings: hydrogen;, alkyl, alkenyl or alkynyl, where these radicals are substituted or unsubstituted;, unsubstituted or substituted cycloalkyl; unsubstituted or substituted phenyl;, or R6 together with R7 forms an unsubstituted C4-C7-alkylene chain in which a CH2 group may be replaced by oxygen sulfur or -NH;, or R1 is a group, where R8 and R9 are each hydrogen alkyl, alkenyl or alkynyl and 1 is, 1, 2 4 …