反应详情

温度

0 °C

To a 0° C. mixture of ethyl 2-formyl-3,4-dimethyl-7-oxo-4,7-dihydrothieno[3,2-b]pyridine-6-carboxylate (695 mg, 2.49 mmol) and glacial acetic acid (0.71 mL, 12.5 mmol) in 1,2-dichloroethane (23 mL) was added sodium triacetoxyborohydride (1.06 g, 4.98 mmol). After stirring for 5 min at 0° C., the reaction was stirred at room temperature for 3.5 hours. The reaction was poured into sat. aqueous. sodium bicarbonate (50 mL) and methylene chloride (30 mL), stirred vigorously for 5 minutes, and filtered. The collected solid was washed with water and methylene chloride, then dried in vacuo, leaving an off-white solid (665 mg, 93%).

1. stirringthe reaction was stirred at room temperature for 3.5 hours
2. additionThe reaction was poured into sat. aqueous
3. filtrationfiltered
4. washThe collected solid was washed with water and methylene chloride
5. customdried in vacuo