反应详情

2-(4-Octyloxy-phenyl)-morpholine (1.50 g; 5.2 mmol), 4-bromo-butyric acid tert-butyl ester (1.38 g; 6.2 mmol) (prepared according to C. Morin, M. Vidal Tetrahedron, 1992, 48(42), 9277), potassium iodide (1.03 g; 6.2 mmol), K2CO3 (1.42 g; 10.29 mmol), and CH3CN (15 mL) were mixed and heated under reflux for 2 hours. After cooling to RT the reaction mixture was concentrated in vacuo, dissolved in EtOAc, washed with 5% aqueous NaHCO3 solution, dried (Na2SO4) concentrated in vacuo and purified by column chromatography (SiO2, Et2O:hexanes 1:1) to afford 4-[2-(4-octyloxy-phenyl)-morpholin-4-yl]-butyric acid tert-butyl ester (1.90 g), TLC (SiO2Rf. 0.20 EtOAc:hexanes 1:1)

1. temperatureheated
2. temperatureunder reflux for 2 hours
3. concentrationwas concentrated in vacuo
4. dissolutiondissolved in EtOAc
5. washwashed with 5% aqueous NaHCO3 solution
6. dry with materialdried (Na2SO4)
7. concentrationconcentrated in vacuo
8. custompurified by column chromatography (SiO2, Et2O:hexanes 1:1)