反应详情

A mixture of 5-chloropyrimidin-2-one hydrochloride (502 mg), 3-bromomethylthiophene (1.069 g), anhydrous sodium carbonate (955 mg) and benzyltrimethylammonium chloride (12 mg) in dry N,N-dimethylformamide (15 ml) was stirred at room temperature. After 22 h the reaction mixture was diluted with water (120 ml) and the resulting precipitate was collected, washed with water and dried to give a pale yellow solid (233 mg). The solid was crystallised from ethanol to give white crystals of the title thiophene (184 mg), m.p. 194°-195° C., λmax 229 nm (ε 14,410), 233 nm (ε 3,080), λinf 246 nm (ε 5,210).

1. customthe resulting precipitate was collected
2. washwashed with water
3. customdried