反应详情

温度

-50 °C

To a solution of α-picoline (1.0 g, 11 mmol) in dry tetrahydrofuran (20 ml), n-butyl lithium (8 ml, 11 mmol; 1.4 mmol/ml) was added at -50° C. under nitrogen stream until the reaction mixture turned red. After stirring at -50° C. for 30 minutes, 2-(4-phenoxyphenoxy)ethyl bromide (3.0 g, 10 mmol) was dropwise added thereto at -50° C., and stirring was continued at the same temperature for 2 hours and at 20° C. for 12 hours. The reaction mixture was poured into ice-water and extracted with ethyl acetate. The ethyl acetate layer was washed with an aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. After removal of the solvent, the residue was purified by silica gel column chromatography to give 2-[3-(4-phenoxyphenoxy)propyl]pyridine (1.6 g) as pale yellow oil. nD24.5 1.5861.

1. stirringat -50° C., and stirring
2. waitwas continued at the same temperature for 2 hours and at 20° C. for 12 hours
3. extractionextracted with ethyl acetate
4. washThe ethyl acetate layer was washed with an aqueous sodium chloride solution
5. dry with materialdried over anhydrous magnesium sulfate
6. customAfter removal of the solvent
7. customthe residue was purified by silica gel column chromatography