反应详情

To (±)-2-(1-hydroxyethyl)-pyridine (Bull. Chem. Soc. Jpn. 1990, 63, 461-465) (10.0 g, 81.3 mmol) in DCM (120 mL) at 0° C., add with stirring triphenylphosphine (22.39 g, 85.365 mmol) followed by NBS (15.2 g, 85.4 mmol) in portions. Warm the reaction mixture to ambient temperature and continue stirring for 3 h. Concentrate in vacuo and purify by chromatography on silica gel eluting with hexane/EtOAc (19:1) to give the title compound.

1. concentrationConcentrate in vacuo
2. custompurify by chromatography on silica gel eluting with hexane/EtOAc (19:1)