Dimethylformamide → 4-(4-Methoxy-carbonyl-phenyl)-piperidine-1-carboxylic acid tert-butyl ester

Beteiligte Stoffe

Reaktionsschritte

To a solution of 4-(4-carboxy-phenyl)-piperidine-1-carboxylic acid tert-butyl ester (828 mg, 2.71 mmol) in DMF (5 ml) are added iodomethane (577 mg, 4.07 μl) and potassium carbonate (375 mg, 2.71 mmol) and the reaction mixture is stirred for 4 hours at room temperature. The reaction mixture is evaporated and the residue is treated with dichloromethane. The solids are filtered off and the filtrate is evaporated to dryness to afford 4-(4-methoxy-carbonyl-phenyl)-piperidine-1-carboxylic acid tert-butyl ester as yellow solid; HPLC/MS 2.21 min (A), [M-tBu] 264.

Herkunft & Nachweise