Abstract: The present invention relates to novel herbicidally active, substituted 1,5-diphenylpyrazolyl-3-oxyalkyl acids and 1-phenyl-5-thienylpyrazolyl-3-oxyalkyl acids and derivatives thereof according to the general formula (I) or agrochemically acceptable salts thereof, to processes for preparation thereof and to the use thereof for control of broadleaved weeds and weed grasses in crops of useful plants and for general control of broadleaved weeds and weed grasses in areas of the environment where plant growth is troublesome. The derivatives of the 1,5-diphenylpyrazolyl-3-oxyalkyl acids and 1-phenyl-5-thienylpyrazolyl-3-oxyalkyl acids especially include the esters, salts and amides thereof.

Abstract: What are described are compounds of the general formula (I) and agrochemically acceptable salts thereof and their preparation and their use in the crop protection sector.