反应详情

Methyl α-phenylthio(m-phenoxyphenyl)acetate (521 mg) was dissolved in 2 ml of anhydrous dimethylformamide. After cooling with ice, 65 mg (65% content) of sodium hydride was added, and the mixture was stirred for 30 minutes. Then, 0.15 ml of methyl iodide was added, and the mixture was stirred for 5 minutes with ice cooling and then for 2 hours at room temperature. After an aqueous solution of ammonium chloride (1 g/40 ml) was added, the mixture was extracted three times with 40 ml of diethyl ether. The organic layer was washed twice with 20 ml of water, dried with anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was chromatographed on a silica gel column using benzene as an eluent to afford 522 mg of methyl α-phenylthio-α-(m-phenoxyphenyl)propionate as an oil in a yield of 96%.

1. additionwas added
2. stirringthe mixture was stirred for 5 minutes with ice cooling
3. waitfor 2 hours at room temperature
4. extractionthe mixture was extracted three times with 40 ml of diethyl ether
5. washThe organic layer was washed twice with 20 ml of water
6. dry with materialdried with anhydrous magnesium sulfate
7. concentrationconcentrated under reduced pressure
8. customThe residue was chromatographed on a silica gel column