SUBSTITUIERTE (ALPHA)-PYRIMIDINYLOXY(THIO)- UND (ALPHA)-TRIAZINYLOXY(THIO)ESSIGSAEUREDERIVATE, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG ALS MITTEL MIT HERBIZIDER, FUNGIZIDER UND PFLANZENWACHSTUMSREGULIERENDER WIRKUNG

摘要

Herbicidal acetic acid derivatives of formula (I) where: R is a group -CO2R<1>, -CH2OH, -CONHSO2R<a> or -CONHSO2NR<a>R<b>, where R<1> is hydrogen or a salt- or ester-forming group, R<a> is alkyl or aryl, and R<b> is hydrogen, alkyl or aryl; R<2> and R<3>, which may be the same or different, are each halogen, alkyl, alkoxy, alkylthio, alkylamino or dialkylamino; A is a substituted or unsubstituted aryl, heterocyclyl or benzoheterocyclyl group, or a substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl or cycloalkenyl group; X is oxygen or sulfur; Y is -CH= or -N=; and Z is oxygen or sulfur; and salts thereof, herbicidal compositions containing them, processes for their preparation, and methods of using them.