反应详情

温度

160 °C

A solution of 4-(2-cyclopropylethoxy)-2-nitrobenzaldehyde (0.79 g), tert-butyl {(1S)-2-[(trans-4-azidocyclohexyl)oxy]-1-methylethyl}carbamate (1.0 g), triphenylphosphine (3.08 g) and triethyl phosphite (3.08 g) in toluene (10 mL) was refluxed for 3 hr. The reaction mixture was allowed to cool, and concentrated under reduced pressure. To the obtained residue was added triethyl phosphite (4.0 g), and the mixture was stirred at 160° C. for 4 hr. The reaction mixture was allowed to cool, and purified by silica gel chromatography (hexane/ethyl acetate) to give the title compound (1.2 g).

1. temperatureto cool
2. concentrationconcentrated under reduced pressure
3. additionTo the obtained residue was added triethyl phosphite (4.0 g)
4. temperatureto cool
5. custompurified by silica gel chromatography (hexane/ethyl acetate)