反应详情

A mixture of 0.5 g (1.8 mmol) of 1-cyclopropyl-6-fluoro-7-chloro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, 0.34 g (2.1 mmol) of 3-methyl-3-aminoazetidine hydrochloride and 0.5 ml of triethylamine in 10 ml of pyridine is heated to reflux for 3 hours. The mixture is allowed to cool and is filtered and the product is washed with water. 0.52 g of 1-cyclopropyl-6-fluoro-7-(3-amino-3-methyl-1-azetidinyl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, melting point 285°-7° C., is thereby obtained.

1. temperatureis heated
2. temperatureto reflux for 3 hours
3. temperatureto cool
4. filtrationis filtered
5. washthe product is washed with water