反应详情

To a solution of N-methylpyrrole (1.62 g, 20 mmol) in ether (10 ml) was added a solution of chloral (3.24 g, 22 mmol) in ether (10 ml). To this was added Amberlyst (160 mg) and the mixture was stirred under reflux for 18 hours. After cooling to room temperature and adding triethylamine (0.3 ml), the mixture was stirred for 5 minutes and filtered through a layer of Celite. The filtrate was concentrated under reduced pressure to afford the crude adduct 1-methyl-2-(2',2',2'-trichloro-1'-hydroxyethyl)pyrrole (4.68 g) as pale brown prisms.

1. additionTo this was added Amberlyst (160 mg)
2. temperatureunder reflux for 18 hours
3. stirringthe mixture was stirred for 5 minutes
4. filtrationfiltered through a layer of Celite
5. concentrationThe filtrate was concentrated under reduced pressure