反应详情

Dropwise, add a 1.0 M solution of iodine monochloride (64 mmol) to a solution of 1,3-dihydro-isobenzofuran-5-ylamine (64 mmol) in dichloromethane (200 mL), methanol (50 mL) and sodium bicarbonate (96 mmol). After stirring for 1 h, quench the reaction with aqueous sodium metabisulfite (100 mL). Separate the organic phase and wash the aqueous with dichloromethane (2×100 mL). Combine the organics and dry over sodium sulfate. Filter the reaction and remove solvent under vacuum. Chromatograph (0-20% ethyl acetate/hexane) the crude mixture over silica gel to give the title compound as a tan solid. 1H NMR (CDCl3, 400 MHz): δ 4.10 (bs, 2H), 4.97 (s, 4H), 6.63 (s, 1H), 7.49 (s, 1H).

1. customquench
2. customthe reaction with aqueous sodium metabisulfite (100 mL)
3. customSeparate the organic phase
4. washwash the aqueous with dichloromethane (2×100 mL)
5. dry with materialCombine the organics and dry over sodium sulfate
6. filtrationFilter
7. customthe reaction
8. customremove solvent under vacuum