反应详情

A mixture of 0.50 g (1.60 mmol) of 8-chloro-1-cyclopropyl-6,7-difluoro-1,4-dihydro-5-methyl-4-oxo-3-quinolinecarboxylic acid, 0.36 g (1.93 mmol) of 3-(t-butoxycarbonyl)aminopyrrolidine, 0.48 g (4.75 mmol) of triethylamine, and 20 ml of acetonitrile was refluxed for four hours, then stirred at room temperature overnight. The solution was concentrated and the residue was triturated with ether:hexane (1:1) and filtered. The solid was washed with water and hexane. The crude product was suspended in 15 ml of dichloromethane and 1.5 ml of trifluoroacetic acid and was stirred at room temperature for four hours. The solution was concentrated to a gold solid which was suspended in water, made basic (pH 11) with 10% sodium hydroxide, and filtered. The solution was then neutralized (pH 7.10), and the precipitate was filtered and washed with water to give 0.29 g of the title compound, mp 124°-126° C.

1. temperaturewas refluxed for four hours
2. concentrationThe solution was concentrated
3. customthe residue was triturated with ether:hexane (1:1)
4. filtrationfiltered
5. washThe solid was washed with water and hexane
6. stirring1.5 ml of trifluoroacetic acid and was stirred at room temperature for four hours
7. concentrationThe solution was concentrated to a gold solid which
8. filtrationfiltered
9. filtrationthe precipitate was filtered
10. washwashed with water