Herbicidally active pyridinyloxy- or phenoxy-phenyl derivatives.

摘要

@ Herbicidally-active compounds of the formula:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="20" wi="74" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>where: Y represents halo ortrifluoromethyl;
<UnorderedLists id="ula01" listStyle="none"><ListItem>Z represents hydrogen, halo, trifluoromethyl or nitro;</ListItem><ListItem>A represents - N= or
<Chemistry id="chema02" num="0002"><Image id="ia02" he="11" wi="8" file="IMGA0002.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>where X is as defined</ListItem><ListItem>above for Z; and</ListItem><ListItem>R represents -N<Sup>-</Sup>Q<Sup>+</Sup> or -NH-O<Sup>+</Sup>An<Sup>-</Sup>where Q<Sup>+</Sup> is a</ListItem></UnorderedLists>
quaternised heterocyclic group bonded through a nitrogen atom thereof, and An<Sup>-</Sup> is a suitable anion, methods for their preparation and compositions containing them.