反应详情

温度

0 °C

Combine 4-(5-formyl-thiophen-2-yloxy)-benzonitrile (772 mg, 3.36 mmol), K2CO3 (powder, 232 mg, 50 mol %) and DMSO (33 mL). Cool down to 0° C. Add hydrogen peroxide (1.01 mL) dropwise. Stir the resulting reaction mixture for 3 hours. Pour the reaction mixture onto H2O (5 mL). Stir for 5 min till a white precipitate appears, then filter and dry under vacuum to provide 633 mg (76%) of the title compound. Part C would be the reaction of this intermediate with an amine to make the final compound. Example 1 was prepared using Method A; Example 2 used Medthod B.

1. customthe resulting reaction mixture for 3 hours
2. additionPour the reaction mixture onto H2O (5 mL)
3. stirringStir for 5 min till a white precipitate
4. filtrationfilter
5. customdry under vacuum