反应详情

Diphenylphosphoryl azide (0.59 ml, 2.7 mmol) and 1,8-diazabicyclo[5.4.0]undec-7-ene (0.41 ml, 2.7 mmol) were added dropwise in that order to a solution of (5-ethoxy-4,6-dimethyl-3-pyridyl)methanol (0.415 g, 2.29 mmol) in toluene (5 ml) at room temperature, and the mixture was stirred for 16 hours. After confirming completion of the reaction by thin layer chromatography, the mixture was poured into water and extraction was performed with ethyl acetate. The extract was washed with saturated aqueous NaCl and dried over anhydrous magnesium sulfate, the solvent was distilled off under reduced pressure and the residue was purified by silica gel column chromatography (solvent: n-hexane-ethyl acetate) to yield the title compound (447 mg, 95%) as a colorless oil.

1. customcompletion of the reaction by thin layer chromatography
2. washThe extract was washed with saturated aqueous NaCl
3. dry with materialdried over anhydrous magnesium sulfate
4. distillationthe solvent was distilled off under reduced pressure
5. customthe residue was purified by silica gel column chromatography (solvent: n-hexane-ethyl acetate)