反应详情

A mixture of 4-(bromomethyl)-3,5-dichloropyridine hydrobromide (1.3 g, 5.0 mmol), 4-methylpyrimidine-2-thiol hydrochloride (543 mg, 3.3 mmol), and triethylamine (1.8 mL, 12.9 mmol) in absolute EtOH (35 mL) was stirred at room temperature overnight. The mixture was evaporated, co-evaporated with EtOAc (10 mL), and dried in vacuo. The solid residue was treated with water (75 mL). The mixture was extracted with 50% ethyl acetate/Et2O (75 mL). The organic extract was extracted with brine (2×75 mL), dried over MgSO4, filtered, evaporated, and dried in vacuo. The crude product was purified by flash chromatography (0-4% MeOH/CH2Cl2), affording the title compound (800 mg, 85% yield); 1H NMR (400 MHz, DMSO-d6): δ 2.45 (s, 3H), 4.70 (s, 2H), 7.17 (d, 1H, J=5.1 Hz), 8.54 (d, 1H, J=5.1 Hz), 8.67 (s, 2H); M+ 287.

1. customThe mixture was evaporated
2. customdried in vacuo
3. additionThe solid residue was treated with water (75 mL)
4. extractionThe mixture was extracted with 50% ethyl acetate/Et2O (75 mL)
5. extractionThe organic extract
6. extractionwas extracted with brine (2×75 mL)
7. dry with materialdried over MgSO4
8. filtrationfiltered
9. customevaporated
10. customdried in vacuo
11. customThe crude product was purified by flash chromatography (0-4% MeOH/CH2Cl2)