反应详情

温度

80 °C

A solution of 2-(2-methylpyrimidin-5-yl)acetonitrile (4 g, 0.03 amol) and 1-bromo-2-(2-bromoethoxy)ethane (7.66 g, 0.033 mol) in 1,4-dioxane (60 mL) was added t-BuOK (66 mL, 0.066 mol, 1M in THF) and heated to 80° C. for 4 h. The reaction mixture was cooled to room temperature, quenched by sat.NH4Cl. The 1,4-dioxane was removed under reduced pressure. The residue aqueous layer was extracted with EtOAc (3×150 mL). The organic layer was dried over Na2SO4 and concentracted to give 4-(2-methylpyrimidin-5-yl)tetrahydro-2H-pyran-4-carbonitrile (5.5 g, yield: 90.5%). 1H NMR (CDCl3 400 MHz): δ8.75 (s, 2H), 4.15-4.05 (m, 2H), 3.95-3.85 (m, 2H), 2.75 (s, 3H), 2.15-2.00 (m, 4H).

1. temperatureThe reaction mixture was cooled to room temperature
2. customquenched
3. customThe 1,4-dioxane was removed under reduced pressure
4. extractionThe residue aqueous layer was extracted with EtOAc (3×150 mL)
5. dry with materialThe organic layer was dried over Na2SO4