| 摘要 |
The title compds. I (R1, R3=halo or H, halo; R2=H, lower alkyl, alkox halo, YC(X)NR4R5; R4, R5=halo- or alkyl-substituted Ph or PhCH2, alkyl; NR4R5=(un)substituted heterocyclyl; X, Y=O, S , useful as agricultural fungicides, were prepd. Thus, refluxing a mixt. of 1.27g 6-(3,5-dichloro-4-methylphenyl)-3-pyridazone, 0.87g K2CO3, 1.3g N, N-dimethyk-carbamoyk chloride, and 50mL acetnitrile for 14 hrs. gave 0.9g 3-N, N-dimethylcarbamoyoxy-6-(3,5-dichloro-4methylphenyl)-pyridazine.
|
