2-Butenoic acid, 3-amino-, ethyl ester, (2Z)- → 6-Trifluoromethyl-nicotinic acid ethyl ester

Participants

Reaction Steps

To an acetonitrile (50 ml) solution of (Z)-4,4,4-trifluoro-3-hydroxy-1-(4-trifluoromethyl-phenyl)-but-2-en-1-one (4.7 g, 17 mmol; D. Barrett, P. D. Bentley, T. R. Perrior, Synthetic Commun. 1996, 26, 3401–3406) was added ethyl-3-aminocrotonate (4.27 g, 33 mmol) under an argon atmosphere. The mixture was heated at reflux for 12 h. The solvent was removed under reduced pressure and the residue purified by column chromatography (silica gel, n-heptane/ethyl acetate) to yield 2.2 g (5.8 mmol, 35%) of the title compound as yellow crystals.

Provenance & Evidence