Water → N-[1-(5-Methyl-2-thienyl)ethylidene]-2-(trifluoromethyl)aniline

Participants

Reaction Steps

A solution of 2-(trifluoromethyl)aniline (4.0 q, 25 mmol), 2-acetyl-5-methylthiophene (4.4 g, 31 mmol), and p-toluenesulfonic acid (50 mg) in toluene (30 mL) was heated under reflux with azeotropic removal of water for 10 hours. Then the mixture was concentrated on a rotary evaporator, and the oily residue was distilled under reduced pressure to give 6.2 g (88%) of ketimine 12q as an oil (bp 128°-130° C./0.3 mm Hg).

Provenance & Evidence