反应详情

To the mixture of tert-butyl 4-cyclobutylpiperazine-1-carboxylate (48 g, 200 mmol) in MeOH (100 mL) was added 2.0 M HCl in MeOH (400 mL) carefully at 0° C. The mixture was stirred at rt for 5 h, concentrated under reduced pressure to afford the desired compound 1-cyclobutylpiperazine hydrochloride (35 g, 82%) [LCMS: Rt=0.94 min, m/z 141.3 (M+H)+].

1. concentrationconcentrated under reduced pressure