alpha-Cyano-beta-(2-Nitro-5-Fluorophenyl)Acrylamide → 6-Fluoro-2-Aminoquinoline-3-Carboxamide

Participants

Reaction Steps

Iron powder (8.52 g., 0.152 mole) is gradually added over a 40-minute period to a slurry of α-cyano-β-(2-nitro-5-fluorophenyl)acrylamide (7.97 g., 0.034 mole) in acetic acid (100 ml.) at 85° C. When addition of the iron powder is complete, the mixture is heated to 95°-100° C. for 1.5 hours and then filtered hot through diatomaceous earth. The filtrate is cooled in an ice bath and then filtered to give a tan crystalline solid. The solid is partitioned between ethyl acetate and water, the organic phase separated, dried over anhydrous sodium sulfate and concentrated to yield 6.34 g. (90%) of the title amide as yellow crystals. M.P. 232°-236° C.

Provenance & Evidence