反应详情

温度

80 °C

1.2 g of sodium cyanide was dissolved in 30 ml of dimethyl sulfoxide at a temperature of 90° C. To this was gradually added 18.5 g of 3-(5-bromobenzo[b]thien-2-yl)-2-(4-methoxyphenyl)propyl methanesulfonate, followed by stirring at 80° C. for 1 hour. The resulting reaction solution was mixed with an ethyl acetate/toluene mixture, washed with water, and then dried to distill off the solvent. Crystals thus precipitated were washed with ethanol and dried to obtain 5 g of 3-(5-bromobenzo[b]thien-2-yl)-2-(4-methoxyphenyl)butyronitrile. The same compound was also obtained with a yield of 2 g, by concentrating the ethanol solution resulting from the washing of crystals and subjecting the concentrate to silica gel column chromatography using chloroform as an elution solvent.

1. customThe resulting reaction solution
2. washwashed with water
3. customdried
4. distillationto distill off the solvent
5. customCrystals thus precipitated
6. washwere washed with ethanol
7. customdried