Diisopropylethylamine → 2-amino-N-(1-(6-(2,2,2-trifluoroethoxy)pyridin-3-yl)ethyl)isonicotinamide

Participants

Reaction Steps

To a mixture of (−)-1-(6-(2,2,2-trifluoroethoxy)pyridin-3-yl)ethanamine hydrochloride (300 mg, 1.17 mmol, Amine-1, single enantiomer), 2-aminoisonicotinic acid (161 mg, 1.17 mmol), and N,N-diisopropylethylamine (0.82 mL, 4.68 mmol) in N,N-dimethylformamide (12 mL) is added HBTU (665 mg, 1.75 mmol) at room temperature. After stirring at room temperature for 1 hour, the mixture is poured onto water (20 mL), and the mixture is extracted with ethyl acetate (20 mL). The organic layer is dried over sodium sulfate and concentrated under reduced pressure. The residue is purified by column chromatography on silica gel eluting with dichloromethane/methanol (10:1) to give 252 mg (63% yield) of the title compound as a slight brown solid.

Provenance & Evidence