反应详情

A mixture containing 3-(R,S)-(1-cyano-1,1-diphenylmethyl)piperidine (0.3 g--see EP-A-0178947), 1-bromo-3-phenylpropane (0.238 g), anhydrous potassium carbonate (0.4 g) and acetonitrile (10 ml) was heated under reflux for 5 hours. The mixture was partitioned between dichloromethane (30 ml) and 10% aqueous potassium carbonate (30 ml), the layers separated, and the aqueous layer extracted with dichloromethane (2×20 ml). The combined dichloromethane extracts were dried (MgSO4) and concentrated vacuo to give a gum which was purified by column chromatography on silica eluting with dichloromethane containing methanol (0% up to 2%). The product-containing fractions were combined and concentrated in vacuo to give the title compound as a gum, yield 0.4g.

1. temperaturewas heated
2. temperatureunder reflux for 5 hours
3. customThe mixture was partitioned between dichloromethane (30 ml) and 10% aqueous potassium carbonate (30 ml)
4. customthe layers separated
5. extractionthe aqueous layer extracted with dichloromethane (2×20 ml)
6. dry with materialThe combined dichloromethane extracts were dried (MgSO4)
7. concentrationconcentrated vacuo
8. customto give a gum which
9. customwas purified by column chromatography on silica eluting with dichloromethane
10. additioncontaining methanol (0% up to 2%)
11. concentrationconcentrated in vacuo