1,2-Dichloroethane → 2-(4-Bromophenyl)-N-isobutyl-2-methylpropanamide

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Methyl 2-(4-bromophenyl)-2-methylpropanoate (1.29 ml, 5 mmol) was added to 30 ml of 1M aq. NaOH and the mixture was stirred at 60° C. overnight. The solution was acidified with 6M aq. HCl (pH 2) and extracted with EtOAc. The organic extract was washed with brine, dried over MgSO4 and concentrated on vacuum. The crude 2-(4-bromophenyl)-2-methylpropanoic acid was coupled without further purification with 2-methylpropan-1-amine (0.5 ml, 5 mmol) in presence of EDC (1.1 g, 5.5 mmol) and HOBt (675 mg, 5 mmol) in 8 ml of DMF at rt overnight. The mixture was dried down on vacuum and extracted with EtOAc and washed with saturated NaHCO3, 10% citric acid and brine. Organic extracts were dried over MgSO4 and concentrated on vacuum to give 2-(4-bromophenyl)-N-isobutyl-2-methylpropanamide as a white solid (1.4 g, 94%). (M+H, 298).

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