N- substituted-3 (nitrogen-containing 5-membered ring) benzenesulfonamide derivatives, their preparation and herbicides

摘要

NEW MATERIAL:A compound expressed by formula I (formula II represents formulae III-VI; R1 represents H, Cl, CH3 COOCH3 or COOC2H5; Z represents CH or N; X1 represents CH3, OCH3 or Cl; X2 represents CH3 or OCH3). EXAMPLE:Methyl 2-[(4,6-dimethoxypyrimidin-2-yl) aminocarbonylaminosulfonyl]-4-(1H-pyrol-1-yl)benzoate. USE:A herbicide. PREPARATION:A 3-(nitrogen-containing 5-membered ring)benzensulfonamide derivative expressed by formula VII is reacted with a phenylcarbamate derivative expressed by formula VIII.