HERBICIDAL SULFONAMIDE DERIVATIVES

摘要

The present invention relates to novel herbicidal sulfonamide derivatives of formula (I) having erythro stereochemistry as herbicides for treatment of pr e- emergence and/or post-emergence, their use and composition as agriculturally suitable herbicides, wherein P and Q, as equivalent or different groups respectively, are CH or N, and present as aromatic ring including P and Q as benzene or pyridine ring; R1 is H, (a) or (b) group, wherein Ra is C1C3 alky l, C1C3 haloalkyl, C2C3 alkenyl or C2C3 alkynyl group, wherein Xa is O, S, NH o r NRa group; R2 is C1C2 alkyl group; and X and Y are independently halogen ato m, c1c2 alkyl, C1C2 alkoxy or C1C2 haloalkoxy group.