反应详情

K-t-BuO (0.67 g, 5.97 mmol) was added to a stirred solution of 1-(2-methoxyphenyl)ethanol (0.96 g, 6.28 mmol) in dioxane (15 mL) at 0° C. (ice-bath). After 5 min of stirring at room temperature, the reaction mixture was chilled to 0° C. (ice-bath) and 2,6-dichloropyrazine (0.78 g, 5.23 mmol) was added whereupon the reaction mixture turned yellow. After being stirrred for 35 min, dichloromethane and K2CO3 were added and the mixture was filtered. Concentration in vacuo furnished a yellow oil that was purified by silica gel chromatography (15×4 cm) using n-hexane ethyl acetate (8:2) as eluent. This gave 1.21 g (92%) of the title compound as a colorless oil. HRMS m/z calcd for C13H13ClN2O2 (M)+ 264.0666, found 264.0677. Anal. (C13H13ClN2O2) C, H, N.

1. additionwas added whereupon the reaction mixture
2. waitAfter being stirrred for 35 min
3. filtrationthe mixture was filtered
4. concentrationConcentration in vacuo
5. customfurnished a yellow oil that
6. customwas purified by silica gel chromatography (15×4 cm)