反应详情

温度

22.5 °C

A suspension of 3.75 g of 80% pure NaH in 50 ml of dimethyl sulfoxide (DMSO) was admixed with 21.7 g of 3-bromo-4-fluorophenol (cf. DE-A 192 80 27) and then stirred at 20-25° C. for 30 min, and a solution of 22.7 g of methyl 2-(2-fluorophenyl)oxoacetate in 100 ml of DMSO was added dropwise. The reaction mixture was stirred at 20-25° C. for approximately 12 hours, poured into ice-water and then extracted with ethyl acetate. The organic phases were washed with 1 N aqueous sodium hydroxide solution and water and dried, and the solvent was distilled off, giving 35 g of the title compound.

1. stirringThe reaction mixture was stirred at 20-25° C. for approximately 12 hours
2. extractionextracted with ethyl acetate
3. washThe organic phases were washed with 1 N aqueous sodium hydroxide solution and water
4. customdried
5. distillationthe solvent was distilled off