反应详情

(S)-1-(tert-butoxycarbonyl)pyrrolidine-2-carboxylic acid (374 mg) and 2-(1-(2-hydroxyethyl)-2,6-dioxopiperidin-3-yl)isoindoline-1,3-dione (500 mg) were dissolved in DCM (30 mL). The mixture was stirred on a magnetic stirrer at room temperature. DCC (350 mg) and DMAP (25 mg) were added in one portion and the mixture was allowed to react overnight. The mixture was then filtered to remove dicyclohexylurea. The filter cake washed several times with DCM, and the filtrates were combined. The filtrates were dried over anhydrous magnesium sulfate and filtered. The solvent was removed by rotary evaporation in vacuo. White solid (658 mg) was obtained after the crude product was purified by silica gel column chromatography (eluted with chloroform:acetone 9:2).

1. customto react overnight
2. filtrationThe mixture was then filtered
3. customto remove dicyclohexylurea
4. washThe filter cake washed several times with DCM
5. dry with materialThe filtrates were dried over anhydrous magnesium sulfate
6. filtrationfiltered
7. customThe solvent was removed by rotary evaporation in vacuo