[Cl:1][CH2:2][C:3](Cl)=[O:4].[CH3:6][NH:7][CH2:8][CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1.C(N(CC)CC)C>O1CCCC1>[Cl:1][CH2:2][C:3]([N:7]([CH3:6])[CH2:8][CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)=[O:4]A solution of chloroacetylchloride (10.0 g, 88.7 mmol) in tetrahydrofuran (50 mL) was added to a solution of N-methylphenethylamine (10.0 g, 73.9 mmol) and triethylamine (11.2 g, 110.8 mmol) in tetrahydrofuran (200 mL) cooled by a water/ice bath. The reaction mixture was allowed to warm to ambient temperature. After stirring for 6 h, the reaction mixture was filtered and the filtrate was concentrated in vacuo to give SiO2, 1:1 ethyl acetate/hexane) to give 13.5 g (86.6%) of brown oil.
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