Morpholine → 1-Ethyl-5,6,8-trifluoro-1,4-dihydro-7-(4-morpholinyl)-4-oxo-3-quinolinecarboxylic acid

Participants

Reaction Conditions

Reaction Steps

A mixture of 289 mg of 1-ethyl-5,6,7,8-tetrafluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 300 mg of morpholine and 5.6 ml of 1-methyl-2-pyrrolidone was heated in a stoppered flask at 65° C. for one hour. Ether was added, the solid collected, dissolved in 200 ml of acetone, filtered and boiled down to about 50 ml. The solid was collected, giving 137 mg of the desired product, mp 281°-283° C.

Provenance & Evidence