反应详情

To an ice-cooled solution of {3-(benzylamino)-6-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-7-fluoro-1,2-benzoxazol-5-yl}methanol (Intermediate 504, 160 mg, 0.41 mmol) in acetonitrile (2 mL) was added NMO (73 mg, 1.5 mmol) followed TPAP (15 mg, 0.1 mmol) and mixture stirred for 2 hours at room temperature. The reaction mixture filtered thorough silica gel bed and washed with EtOAc. The organic phase concentrated under reduced pressure to give title compound as a yellow solid. Yield: 75 mg, (47%).

1. filtrationThe reaction mixture filtered thorough silica gel bed
2. washwashed with EtOAc
3. concentrationThe organic phase concentrated under reduced pressure