反应详情

A mixture of 0.50 g (1.84 mmole) of 1-ethyl-6,7,8-trifluoro-4-oxo-quinoline-3-carboxylic acid, 5 ml acetonitrile, 0.28 g (1.84 mmole) 1,8-diazabicyclo[5.4.0]undec-7-ene and 0.28 g (1.94 mmole) of 2-[(3-pyrrolidinylmethyl)amino]ethanol was refluxed one hour and then stirred at room temperature overnight. The reaction was filtered and the precipitate washed with ether until dry to give 0.58 g of 1-ethyl-6,8-difluoro-1,4-dihydro-7-[3-[[(2-hydroxyethyl)amino]methyl]-1-pyrrolidinyl]-4-oxo-3-quinoline carboxylic acid, mp 215°-216° C.

1. temperaturewas refluxed one hour
2. filtrationThe reaction was filtered
3. washthe precipitate washed with ether
4. customuntil dry