1,1'-Carbonyldiimidazole → HCID 86619596, compound

Participants

Reaction Steps

To a suspension of 1-{4-[(tert-butoxycarbonyl)amino]phenyl}piperidine-4-carboxylic acid (1.3 g, 4.1 mmol) in dichloromethane (40 mL) is added carbonyldiimidazole (0.79 g, 4.9 mmol) and the mixture is stirred at room temperature for 30 minutes before N,O-dimethylhydroxylamine hydrochloride (1.0 g, 10 mmol) is added. After stirring for 30 minutes, the reaction mixture is concentrated under reduced pressure. The residue is partitioned between diethyl ether and water. The ethereal phase is washed 2× with water and once with saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure to provide tert-butyl [4-(4-{[methoxy(methyl)amino]carbonyl}piperidin-1-yl)phenyl]carbamate as a pale yellow solid (1.5 g, 100%).

Provenance & Evidence