Acetyl chloride → Tert-butyl 4-[3-(acetylamino)phenyl]-1-piperidinecarboxylate

참여 물질

반응 단계

Into a solution of 14.6 g (52.6 mmol) of tert-butyl 4-[3-(amino)phenyl]-1-piperidinecarboxylate and 14.7 mL (105 mmol) of triethylamine in 120 mL THF at 0° C. was slowly added 4.5 mL (63.1 mmol) of acetyl chloride. The reaction mixture was stirred at room temperature for 2 hours and concentrated in vacuo. The residue was dissolved in CH2Cl2 and washed with H2O, followed by brine. The organic layer was dried over MgSO4 and concentrated in vacuo to give 16.6 g (52.1 mmol, 99%) of desired product: 1H NMR (400 MHz, CDCl3) δ 7.41–7.20 (m, 3H), 6.94 (d, 1H, J=7.5 Hz), 4.21 (m, 2H), 2.75 (m, 2H), 2.62 (m, 1H), 2.16 (s, 3H), 1.78 (m, 2H), 1.56 (m, 2H), 1.48 (s, 9H).

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