反应详情

Cool a solution of 3-chloro-4-(4-formyl-phenoxy)-benzonitrile (1.57 g, 6.10 mmol) in dimethylsulfoxide (50 mL) to 0° C. Add potassium carbonate (0.42 g, 3.05 mmol) followed by 30% aqueous hydrogen peroxide (1.83 mL, 6.10 mmol). Remove the cooling bath and let stir at rt for 3 hrs. Pour into water (100 mL) and after trituration, filter the solid formed to obtain the product (1.40 g, 84%). 1H NMR (DMSO-d6) 9.93 (s, 1H), 8.12 (d, J=1.2 Hz, 1H), 8.10 (bs, 1H), 7.95-7.90 (m, 3H), 7.53 (bs, 1H), 7.34 (d, J=8.6 Hz, 1H), 7.13 (d, J=8.6 Hz, 2H).

1. customRemove the cooling bath
2. additionPour into water (100 mL)
3. filtrationafter trituration, filter the solid
4. customformed