反应详情

3-(Pyrrolidinomethyl)phenol (10 g) was dissolved in DMF (50 ml). The solution was cooled in ice and sodium hydride (2.98 g) added over 45 minutes. After stirring for a further 60 minutes 4-bromobutyronitrile (6.2 ml) was added dropwise. The mixture was then stirred at room temperature for a further 40 hours. Water was added (150 ml) and the pH of the solution adjusted to about 5 with glacial acetic acid. The solution was extracted with ether (3×100 ml). The aqueous layer was adjusted to pH 10 with K2CO3 and re-extracted with chloroform (3×100 ml). The chloroform extracts were washed with water, dried (MgSO4) and evaporated to give a light brown oil (33.49 g). To remove residual DMF this oil was dissolved in ethyl acetate and the solution extracted (×6) with water. The ethyl acetate solution was finally dried (MgSO4) and evaporated to give the product as a light brown oil (11.16 g).

1. temperatureThe solution was cooled in ice
2. additionwas added dropwise
3. extractionThe solution was extracted with ether (3×100 ml)
4. extractionre-extracted with chloroform (3×100 ml)
5. washThe chloroform extracts were washed with water
6. dry with materialdried (MgSO4)
7. customevaporated