p-Aminoacetophenone → HCID 17539973, compound

Participants

Reaction Steps

To a solution of 4-aminoacetophenone (6.76 g, 50 mmol) in DMF (250 ml) were added TOTU (16.40 g, 50 mmol), boc-isonipecotic acid (11.46 g, 50 mmol) and DIPEA (8.6 ml, 50 mmol). The reaction mixture was stirred at ambient temperature for 12 h. The solvent was removed in vacuo. The residue was redissolved in ethyl acetate (250 ml) and washed with sat. sodium hydrogen carbonate solution (2×50 ml), hydrochloric acid (1 N, 50 ml) and brine (50 ml). The organic phase was dried over sodium sulfate, evaporated and recrystallized from ethyl acetate. The product was obtained as white crystalline solid (yield: 12.2 g, 70%).

Provenance & Evidence