反应详情

3.24 g of ethyl 5-{(2RS,3RS)-3-azido-2-(4-nitrophenyl)butyl}-2-furancarboxylate was dissolved in a mixed solution of 50 ml of tetrahydrofuran and 5 ml of water, and 2.37 g of triphenylphosphine was added thereto, followed by heating and refluxing for 6 hours. The reaction solution was left to cool to room temperature, and then ethyl ether and water were added thereto for extraction. The organic layer was washed with a saturated sodium chloride aqueous solution and then dried over anhydrous magnesium sulfate. The drying agent was filtered off, and then, the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (methylene chloride/methanol=100/1+20/1) to obtain 2.89 g of the above-identified compound.

1. additionwas added
2. temperatureby heating
3. temperaturerefluxing for 6 hours
4. waitThe reaction solution was left
5. extractionfor extraction
6. washThe organic layer was washed with a saturated sodium chloride aqueous solution
7. dry with materialdried over anhydrous magnesium sulfate
8. filtrationThe drying agent was filtered off
9. distillationthe solvent was distilled off under reduced pressure
10. customThe residue was purified by silica gel column chromatography (methylene chloride/methanol=100/1+20/1)