反应详情

温度

50 °C

To a solution of (R)-ethyl 2-(methylsulfonyloxy)propanoate (15 g, 0.076 mol) in DMF (300 ml) was added dibenzyl malonate (21.5 g, 0.076 mol) and CsF (11.5 g, 0.076 mol). The mixture was heated to 50° C. for 2 days. After cooled to room temperature, the mixture was poured into water and then extracted with EtOAc. The organic phase was washed with brine, water and dried. Concentrated to afford (R)-1,1-dibenzyl 2-ethyl propane-1,1,2-tricarboxylate, which was purified by silica gel chromatography (11 g, 40%).

1. temperatureAfter cooled to room temperature
2. extractionextracted with EtOAc
3. washThe organic phase was washed with brine, water
4. customdried
5. concentrationConcentrated