[I:1]Cl.[CH2:3]1[C:11]2[C:6](=[CH:7][C:8]([NH2:12])=[CH:9][CH:10]=2)[CH2:5][O:4]1.C(=O)(O)[O-].[Na+]>ClCCl.CO>[I:1][C:9]1[CH:10]=[C:11]2[C:6]([CH2:5][O:4][CH2:3]2)=[CH:7][C:8]=1[NH2:12]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).
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