反应详情

Pyridine (15 mL) was added dropwise to a cooled (0° C.) solution of 4-(4-methoxyphenyl)butanol (10.0 g, 0.055 mol) and p-toluenesulfonyl chloride (13.6 g, 0.072 mol) in dry chloroform (100 mL) under stirring. The reaction mixture was stirred overnight at room temperature. After this time, the reaction was quenched with 10% HCl (300 mL) and extracted with chloroform. The organic fraction was washed with saturated NaHCO3, water and dried over magnesium sulfate. The solvent was removed under reduced pressure and the residue purified by flash chromatography (eluent: hexane, ethyl acetate=15:1) to provide 12.9 g (66%) of I as clear oil. 1H NMR (360 MHZ, CDCl3) δ 1.61 (m, 4H), 2.44 (s, 3H), 2.52 (m, 2H), 3.78 (s, 3H), 4.05 (m, 2H), 6.77 (d, J=12.5 Hz, 2H), 7.05 (d, J=12.5 Hz, 2H), 7.34 (d, J=10.5 Hz, 2H), 7.78 (d, J=10.5 Hz, 2H).

1. stirringThe reaction mixture was stirred overnight at room temperature
2. customAfter this time, the reaction was quenched with 10% HCl (300 mL)
3. extractionextracted with chloroform
4. washThe organic fraction was washed with saturated NaHCO3, water
5. dry with materialdried over magnesium sulfate
6. customThe solvent was removed under reduced pressure
7. customthe residue purified by flash chromatography (eluent: hexane, ethyl acetate=15:1)
8. customto provide 12.9 g (66%) of I as clear oil