反应详情

3.6 g of 1-benzyl-4-methyl-4-phenyl-[1,4]azasilinane is put in 32 ml of anhydrous dichloromethane under nitrogen. At 0° C., 2.5 ml of 1-chloroethyl chloroformate is added dropwise to the reaction mixture. The reaction mixture is gradually brought back to room temperature and then stirred for 2 h under reflux. After complete conversion, the reaction mixture is concentrated under vacuum and dried, then the residue is dissolved in 50 ml of methanol at room temperature. The mixture is stirred under reflux for 2 h. After evaporation of the solvent under vacuum, the yellow solid obtained is then suspended in ethyl acetate. The suspension is refluxed for some minutes and then gradually cooled to room temperature. The crystals thus formed are filtered, washed with ethyl acetate and dried under vacuum. 2.13 g of 4-methyl-4-phenyl-[1,4]azasilinane hydrochloride is obtained in the form of white crystals.

1. customis gradually brought back to room temperature
2. temperatureunder reflux
3. concentrationAfter complete conversion, the reaction mixture is concentrated under vacuum
4. customdried
5. dissolutionthe residue is dissolved in 50 ml of methanol at room temperature
6. stirringThe mixture is stirred
7. temperatureunder reflux for 2 h
8. customAfter evaporation of the solvent under vacuum
9. customthe yellow solid obtained
10. temperatureThe suspension is refluxed for some minutes
11. customThe crystals thus formed
12. filtrationare filtered
13. washwashed with ethyl acetate
14. customdried under vacuum