反应详情

Triphenylphosphine (265 mg, 1.01 mmol) and perbromomethane (335 mg, 1.010 mmol) were added to a solution of 4-(3-fluorophenyl)-3-(hydroxymethyl)-1H-isochromen-1-one (intermediate B3, 210 mg, 0.777 mmol) in DCM (6.5 ml) and the mixture was stirred overnight at RT. Further triphenylphosphine (265 mg, 1.010 mmol) and perbromomethane (335 mg, 1.01 mmol) were then added and left on stirring at RT for 6 hrs. The reaction was then diluted with MeOH (1 ml) and straightforward purified on 50 g Biotage silica cartridge eluting with a gradient of Hexane and EtOAc to give the title compound (154 mg, 59.5%) as a yellow solid.

1. waitleft
2. stirringon stirring at RT for 6 hrs
3. customstraightforward purified on 50 g Biotage silica cartridge
4. washeluting with a gradient of Hexane and EtOAc