| 摘要 |
NEW MATERIAL:A compound expressed by formula I [R<1> and R<2> are H or lower alkyl; Q is formula II-IV (R<3>-R<6> are H or lower alkyl); X and Y are lower alkyl or lower alkoxy; Z is N or -CH=]. EXAMPLE:N-[(4,6-Dimethoxypyrimidin-2-yl)aminocarbonyl]-1-methyl-4-(5-m ethyl- 1,3,4-oxadiazol-2-yl)pyrazole-5-sulfonamide. USE:A herbicide. PREPARATION:A pyrazolesulfonyl isocyanate derivative expressed by formula V is dissolved in a sufficiently dried inert solvent, e.g. dioxane, acetonitrile, etc., and aminopyridine or aminotriazine derivative expressed by formula VI is added and reacted with the derivative expressed by formula V. |
