反应详情

Benzyl (3S)-3-(hydroxymethyl)piperazine-1-carboxylate hydrochloride (0.83 g, 2.9 mmol) was dissolved in methylene chloride (10 mL) together with DIPEA (1.5 mL, 8.6 mmol). Bromoacetyl chloride (0.48 g, 3.0 mmol) was added at 0° C. by means of drops. The mixture was stirred at RT for 1 h and then water (10 mL) was added. The phases were separated by means of a phase separator column. The organic solution was collected and the solvent was removed by evaporation. There was obtained 1.1 g (100%) of benzyl (3S)-4-(bromoacetyl)-3-(hydroxymethyl)piperazine-1-carboxylate as a brown oil. LCMS: m/z 370 (M−1)−.

1. customThe phases were separated by means of a phase separator column
2. customThe organic solution was collected
3. customthe solvent was removed by evaporation