反应详情

A mixture of 0.25 g (1.32 mmoles) of 1-cyclopropyl-6,7-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 0.34 g (12 mmoles) of 3-dimethylaminoazetidine dihydrochloride and 3.3 g (33 mmoles) of triethylamine is heated under reflux in 10 ml of pryidine for 2 hours. The mixture is evaporated under vacuum, water is added and the resulting mixture made alkaline with 1N sodium hydroxide, heated, filtered while hot, acidified with acetic acid and filtered again. After washing with water, 0.4 g (88%) of 1-cyclopropyl-6-fluoro-7-(3-dimethylamino-1-azetidinyl)-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid are obtained, melting at 255°-61° C.

1. temperatureis heated
2. temperatureunder reflux in 10 ml of pryidine for 2 hours
3. customThe mixture is evaporated under vacuum, water
4. additionis added
5. temperatureheated
6. filtrationfiltered while hot,
7. filtrationfiltered again
8. washAfter washing with water, 0.4 g (88%) of 1-cyclopropyl-6-fluoro-7-(3-dimethylamino-1-azetidinyl)-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid
9. customare obtained