反应详情

温度

0 °C

To a suspension of LiH (699 mg, 87.90 mmol) in anhydrous THF was added dropwise a suspension of (4-ethyl-1,3-thiazol-2-yl)acetonitrile (6.69 g, 43.95 mmol) in THF (60 mL) and the suspension was stirred for 1 h at 0° C. A suspension of 2,4-dichloropyrimidine (7.2 g, 48.34 mmol) in THF (60 mL) was added dropwise to the pale red suspension at 0° C. and the resulting mixture was stirred at rt for 7 h. The reaction was quenched by addition water (10 mL) at 0° C. then the solution obtained was left overnight under stirring. The THF was removed under reduced pressure then 80 mL of water were added and the suspension was acidified with 1N HCl. The precipitate formed was filtered off and washed with water until neutral pH to afford 9.96 g of the title compound as a beige powder (Y=85.5%).

1. additionwas added dropwise
2. additionwas added dropwise to the pale red suspension at 0° C.
3. stirringthe resulting mixture was stirred at rt for 7 h
4. customThe reaction was quenched by addition water (10 mL) at 0° C.
5. customthe solution obtained
6. waitwas left overnight
7. stirringunder stirring
8. customThe THF was removed under reduced pressure
9. addition80 mL of water were added
10. customThe precipitate formed
11. filtrationwas filtered off
12. washwashed with water until neutral pH