反应详情

To a solution of Methyl 2,5-dichloronicotinate (120 mg, 0.58 mmol,) in isopropanol (10 ml), 2-phenylpyrrolidine (86 mg, 0.58 mmol, available from Matrix Scientific #018619) and N,N-Diisopropylethylamine (90 mg, 0.70 mmol) were added. The mixture was heated under reflux overnight. After cooling to room temperature, the mixture was evaporated and the residue was dissolved in ethyl acetate (10 ml), washed with water (10 ml) and brine (10 ml), dried over Na2SO4 and evaporated in vacuo. The crude residue was purified by flash chromatography on silica gel eluting with a mixture petroleum ether/ethyl acetate 20:1 to afford the title compound (D72) (167 mg) as colorless oil.

1. temperatureThe mixture was heated
2. temperatureunder reflux overnight
3. customthe mixture was evaporated
4. dissolutionthe residue was dissolved in ethyl acetate (10 ml)
5. washwashed with water (10 ml) and brine (10 ml)
6. dry with materialdried over Na2SO4
7. customevaporated in vacuo
8. customThe crude residue was purified by flash chromatography on silica gel eluting with a mixture petroleum ether/ethyl acetate 20:1