反应详情

2 g of homoserine (16.78 mmol) were dissolved in 20 ml of water and to the solution 16.78 ml of 1 M NaOH and 3.006 g of cesium carbonate (9.23 mmol) were added. After stirring for 5 minutes, the solution was cooled in an ice/water bath. 60 ml of dioxane and terbutyl pyrocarbonate were then added. The reaction mixture was kept under stirring in an ice-cold water bath for 1 hour and thereafter at room temperature for 5 hours. The solvent was subsequently removed under vacuum. The dry residue was directly used in the next step.

1. additionwere added
2. temperaturethe solution was cooled in an ice/water bath
3. stirringunder stirring in an ice-cold water bath for 1 hour
4. waitat room temperature for 5 hours
5. customThe solvent was subsequently removed under vacuum