反应详情

A mixture of 1-cyclopropyl-8-ethenyl-6,7-difluoro -1,4-dihydro-4-oxo-3-quinolinecarboxylic acid (0.40 g, 1.44 mmol), piperazine (0.80 g, 7.8 mmol), and CH3CN (3 mL) was refluxed for 16 hours. Workup was identical to that described in Example 1 to provide 0.28 g (54%) of the desired product; mp 213°-218° dec.

1. temperaturewas refluxed for 16 hours