反应详情

20.9 g of 9-azabicyclo[3.3.1]nonan-3-one hydrochloride was dissolved in 600 mL of DMF. 89.0 g of Cs2CO3 followed by 29 g of 4-chlorobenzenesulfonyl chloride was added and the reaction mixture was stirred overnight at rt. After an additional day of stirring, the reaction mixture was poured into 1.4 L of vigorously stirring EtOAc. The mixture was stirred for 2 h and allowed to stand at rt overnight. The mixture was filtered to remove undissolved solids and the filtrate was washed with H2O (2 L×3) and brine (2 L). The organic layer was dried over MgSO4, filtered and the solvent was removed by rotary evaporation. A granular, tan solid was produced. Trituration with methanol dissolved a tan impurity to afford 9-(4-chlorophenylsulfonyl)-9-azabicyclo[3.3.1]nonan-3-one as a white crystalline solid (25.9 g, 69% yield).

1. additionwas added
2. stirringAfter an additional day of stirring
3. stirringThe mixture was stirred for 2 h
4. waitto stand at rt overnight
5. filtrationThe mixture was filtered
6. customto remove undissolved solids
7. washthe filtrate was washed with H2O (2 L×3) and brine (2 L)
8. dry with materialThe organic layer was dried over MgSO4
9. filtrationfiltered
10. customthe solvent was removed by rotary evaporation
11. customA granular, tan solid was produced