反应详情

12.4 cm3 of a 1.5M solution of butyllithium in hexane is added at -70° C. to a solution of 3.2 g of 5-(2-pentyloxy) pyrrolidin-2-one in 130 cm3 of tetrahydrofuran. The mixture is maintained at this temperature for 20 minutes, then a solution of 2.62 g of benzoyl chloride in 20 cm3 of tetrahydrofuran is added. The solution is returned to ambient temperature, concentrated and chromatographed on silica (eluent: hexane-ethyl acetate 7-3). 3.35 g of expected product is obtained.

1. temperatureThe mixture is maintained at this temperature for 20 minutes
2. customis returned to ambient temperature
3. concentrationconcentrated
4. customchromatographed on silica (eluent: hexane-ethyl acetate 7-3)