Acetic Acid → (1-Benzylpiperidin-4-yl)-[2-(5-methoxy-2-nitrophenyl)-ethyl]-amine

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

Under a nitrogen atmosphere a mixture of 9.98 g (50.9 mmol) 2-(5-methoxy-2-nitrophenyl)-ethylamine, 9.8 mL (54.9 mmol) N-benzylpiperidone and 6.3 mL (114 mmol) acetic acid in 270 mL dichloromethane was cooled to 0° C. in an ice bath. At this temperature 14.2 g (67.0 mmol) sodium triacetoxyborohydride were added batchwise within 20 min. The reaction mixture was left for a further 4 h at 0° C. with stirring and heated to RT overnight. Then the mixture was combined with 400 mL of a 15% (w/v) aqueous potassium carbonate solution and stirred for 1 h at RT. The organic phase was separated off, dried and concentrated by rotary evaporation.

Herkunft & Nachweise