Sulfonylurea compounds, their production and herbicidal use.

摘要

A compound of the general formula:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="18" wi="66" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein Q is a condensed heterocyclic group having N atom in the bridgehead which may substituted, W is 0 or S, R<Sub>1</Sub> and R<Sub>2</Sub> each are an alkyl group, an alkoxy group or halogen and z is CH or N, and a salt thereof, which is useful as herbicide.