O=C1C2C(=CC=CC=2)C(=O)[N:3]1[CH:12]([CH2:22][O:23][C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[CH2:13][NH:14][C:15](=[O:21])[O:16][C:17]([CH3:20])([CH3:19])[CH3:18].CN>>[NH2:3][CH:12]([CH2:22][O:23][C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1)[CH2:13][NH:14][C:15](=[O:21])[O:16][C:17]([CH3:18])([CH3:20])[CH3:19]1.08 g of rac-tert-butyl [2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-3-phenoxypropyl]carbamate (2.72 mmol, 1 equivalent) were initially charged in 5 ml of 40% strength aqueous methylamine solution and reacted in a microwave at 100° C. for 2 h. The reaction mixture was concentrated and the residue was then chromatographed on silica gel (Biotage Isolera; mobile phase: dichloromethane/methanol gradient). This gave 200 mg (27% of theory) of the title compound.
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