反应详情

温度

40 °C

5′-Amino-2′,5′-dideoxyuridine (0.237 g, 1.04 mmol) was reacted with 2-chlorotrityl chloride (0.415 g, 1.33 mmol) in dry pyridine (5 mL) at 40° C. for 24 h. A second portion of 2-chlorotrityl chloride (0.198 g, 0.63 mmol) was added. After a further 2 h stirring at 40° C., the reaction was quenched with MeOH (2 mL). The reaction mixture was concentrated in vacuo and purified by flash column chromatography using an ISOLUTE Si column eluted with a gradient of 0→5% CH3OH in CHCl3. The fractions with Rf=0.17 (10% CH3OH/CHCl3) yielded the title compound as a white solid (85 mg, 16%).

1. customthe reaction was quenched with MeOH (2 mL)
2. concentrationThe reaction mixture was concentrated in vacuo
3. custompurified by flash column chromatography
4. washeluted with a gradient of 0→5% CH3OH in CHCl3