[Cl:1][C:2]([Cl:7])([Cl:6])[C:3](Cl)=[O:4].[CH2:8]1[C:16]2[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=2)[CH2:10][NH:9]1.CCN(CC)CC>C(Cl)Cl>[Cl:1][C:2]([Cl:7])([Cl:6])[C:3]([N:9]1[CH2:10][C:11]2[C:16](=[CH:15][CH:14]=[CH:13][CH:12]=2)[CH2:8]1)=[O:4]Under N2, at 0° C., trichloroacetyl chloride (0.57 mL, 5.0 mmol) was added dropwise to a stirring solution of isoindoline (1.0 g, 5.0 mmol), Et3N (0.7 mL, 0.51 g, 5.0 mmol) and CH2Cl2 (20 mL). The solution was allowed to warm to room temperature and stirred for 1 h. After evaporating the solvents in vacuo, the mixture was purified via silica gel chromatography using 8:2 hexanes/EtOAc to obtain the desired amide (1.2 g, 4.6 mmol, 91% yield). LC/MS (10-99% CH3CN), M/Z: M+1 obs=265.9; tR=3.51 min.
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