反应详情

To a solution of (R)-tert-butyl 4-fluoro-2-(4-(8-fluorochroman-4-ylamino)-5-nitropyrimidin-2-ylamino)phenylcarbamate (141 mg) in THF (20 mL) was added a premixed solution of sodium hydrosulfite (0.6 g) and sodium bicarbonate (0.3 g) in water (50 mL). MeOH (5 mL) was also added to aid solution of the mixture, which was stirred at room temperature for 30 min, when sodium chloride was added to saturate the solution. The resultant mixture was extracted with EtOAc (2×), the combined organics were dried, filtered and evaporated to yield (R)-tert-butyl 2-(5-amino-4-(8-fluorochroman-4-ylamino)pyrimidin-2-ylamino)-4-fluorophenylcarbamate that was used as such for the next step, MH+=485.

1. concentrationto saturate the solution
2. extractionThe resultant mixture was extracted with EtOAc (2×)
3. customthe combined organics were dried
4. filtrationfiltered
5. customevaporated