| abstract |
The present invention relates to novel sulfonyl urea derivatives of formula (I) having erythro-type stereoisomer as herbicides for treatment of pre-emergence and/or post-emergence, their use and composition as agriculturally suitable herbicides, wherein, P and Q, as equivalent or different group respectively, are CH or N, and present as aromatic ring including P and Q as benzene or pyridine ring; R is H, (a) or (b) group, wherein Ra is C1 ∩C4 alkyl, C1 ∩C3 haloalkyl, C2 ∩C4 alkenyl or C2 ∩C4 alkynyl group, wherein Xa is O, S, NH or NRa group; R' is H or CH¿3? group; and X and Y are independently halogen atom, C1 ∩C2 alkyl, C1 ∩C2 alkoxy or C1 ∩C2 haloalkoxy group. |