中文摘要：

Novel sulfonylurea derivatives containing flve-membered hete-rocycle 3a-1 and 4a-d were synthesized in good yields by the regioselective addition of aryl sulfonylisocyanates 1 to 5-amino-3-benzyl (aryl) thio-1, 2, 4-triazoles and its pyrazole analogues 2. The structures of all these compounds were evaluated by elemental analyses and 1H NMR spectroscopy. The preliminary biological tests showed that the products displayed herbiddal activity against rape to some extent.

英文摘要：

Novel sulfonylurea derivatives containing five-membered heterocycle 3a—1 and 4a—d were synthesized in good yields by the regioselective addition of aryl sulfonylisocyanates 1 to 5-amino-3-benzyl(aryl) thio-1,2,4-triazoles and its pyrazole analogues 2. The structures of all these compounds were evaluated by elemental analyses and 1H NMR spectroscopy. The preliminary biological tests showed that the products displayed herbicidal activity against rape to some extent.