反应详情

温度

60 °C

Trichloroisocyanuric acid (3.62 g) was added to a solution of 3-chloro-6-methyl-pyridazine (5.00 g) in chloroform (130 mL) heated to 60° C. The mixture was stirred at 60° C. for 2 h and then at room temperature overnight. The mixture was filtered over Celite and the filtrate was concentrated. The residue was chromatographed on silica gel (cyclohexane/ethyl acetate 98:2→70:30) to give the title compound as a colorless oil that solidified on standing. Yield: 2.48 g (39% of theory); Mass spectrum (ESI+): m/z=163/165/167 (2 Cl) [M+H]+.

1. customat room temperature
2. customovernight
3. filtrationThe mixture was filtered over Celite
4. concentrationthe filtrate was concentrated
5. customThe residue was chromatographed on silica gel (cyclohexane/ethyl acetate 98:2→70:30)