反应详情

温度

-78 °C

To a solution of 2-phenyl-5-hydroxymethylpyridine (264 mg, 1.43 mmol) and diisopropylethylamine (0.522 mL, 3.00 mmol) in dichloromethane (10 mL) at -78° C. was added trifluoromethanesulfonic anhydride (0.252 mL, 1.50 mmol) and the mixture stirred at -78° C. for 15 minutes. To this mixture was added a solution of 1-trityl-4-(4-cyanobenzyl)imidazole (608 mg, 1.43 mmol) in dichloromethane (9 mL). The mixture was allowed to warm to ambient temperature and stirred for 16 hours. The solvent was evaporated in vacuo. The residue was dissolved in methanol (15 mL), heated at reflux for 1 hour, and the solvent evaporated in vacuo. The residue was partitioned between dichloromethane and sat. aq. NaHCO3 solution. The organic layer was dried, (Na2SO4) and the solvent evaporated in vacuo. The residue was chromatographed (Silica gel, 0-5% NH4OH in CH2Cl2). The amine was converted to the HCl salt by treatment with 1.0M HCl in aqueous acetonitrile. Evaporation of the solvent in vacuo afforded the title compound as a white solid. FAB MS 351 (MH+)

1. temperatureto warm to ambient temperature
2. stirringstirred for 16 hours
3. customThe solvent was evaporated in vacuo
4. dissolutionThe residue was dissolved in methanol (15 mL)
5. temperatureheated
6. temperatureat reflux for 1 hour
7. customthe solvent evaporated in vacuo
8. customThe residue was partitioned between dichloromethane and sat. aq. NaHCO3 solution
9. customThe organic layer was dried
10. custom(Na2SO4) and the solvent evaporated in vacuo
11. customThe residue was chromatographed (Silica gel, 0-5% NH4OH in CH2Cl2)
12. customEvaporation of the solvent in vacuo