反应详情

温度

35 °C

4-(5-chloropyridin-3-yl)-3-[(trans-4-methylcyclohexyl)methyl]-3H-imidazo[4,5-c]pyridine-6-carbonitrile (1 g, 2.73 mmol) was dissolved in THF (10 mL). Disodium hydrogen phosphate (1.16 g, 8.20 mmol) was added and the reaction was warmed to 35° C. with stirring. 1,3-dibromo-5,5-dimethylhydantoin (0.938 g, 3.28 mmol) was added in 1 portion and the reaction was continued with stirring at 35° C. After 1 hour, the reaction was diluted with EtOAc (100 mL) and washed with aqueous NaHSO3 and brine. The organic layer was dried over Na2SO4, filtered, and concentrated. Purification of the residue on a silica gel column with 0 to 75% EtOAc/hexanes provided 2-bromo-4-(5-chloropyridin-3-yl)-3-[(trans-4-methylcyclohexyl)methyl]-3H-imidazo[4,5-c]pyridine-6-carbonitrile.

1. stirringwith stirring at 35° C
2. washwashed with aqueous NaHSO3 and brine
3. dry with materialThe organic layer was dried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated
6. customPurification of the residue on a silica gel column with 0 to 75% EtOAc/hexanes