| abstract |
N-ARYLSULFONYL-N'-PYRIMIDINYLUREAS OF THE GENERAL FORMULA (FORMULA 1) AND THE SALTS OF THESE COMPOUNDS WITH AMINES, ALKALI METAL BASES OR ALKALINE EARTH METAL BASES OR WITH QUATERNARY AMMONIUM BASES HAVE GOOD PRE-EMERGENCE AND POST-EMERGENCE SELECTIVE HERBICIDAL AND GROWTH-REGULATING PROPERTIES. IN THIS FORMULA: R18 DENOTES HYDROGEN, ALKYL OR ALKOXY, X DENOTES AN OPTIONALLY SUBSTITUTED PHENYL RADICAL OR AN OPTIONALLY SUBSTITUTED NAPHTHYL RADICAL, C1-C3-ALKOXY, C1-C3-HALOGENOALKOXY, C1-C3-ALKYLTHIO, C2-C3-ALKOXYALKYL, HALOGEN OR AN OPTIONALLY SUBSTITUTED AMINO GROUP AND Z DENOTES OXYGEN OR SULFUR. |