反应详情

To a solution of 3-bromo-5-fluorobenzaldehyde (LXXIX) (2.03 g, 10.01 mmol) in DCE (50 mL) was added methanesulfonamide (1.43 g, 15.01 mmol) and TEA (2.79 mL, 20.02 mmol). NaBH(OAc)3 (3.00 g, 14.13 mmol) was added and stirred at room temperature overnight. The solvent was removed under vacuum and the residue was partitioned between EtOAc and water. The organic layer separated and washed with water, brine, dried over MgSO4 and evaporated under vacuum to produce N-(3-bromo-5-fluorobenzyl)methanesulfonamide (LXXX) as a colorless oil (2.653 g, 9.40 mmol, 93.9% yield). ESIMS found C8H9BrFNO2S m/z 282.0 (M+H).

1. customThe solvent was removed under vacuum
2. customthe residue was partitioned between EtOAc and water
3. customThe organic layer separated
4. washwashed with water, brine
5. dry with materialdried over MgSO4
6. customevaporated under vacuum