Diisopropylethylamine → (S)-3-(3-chloro-5-(trifluoromethyl)pyridin-2-ylamino)-1'-(5-chloropyrazin-2-yl)-[1,4'-bipiperidin]-2-one

Participants

Reaction Conditions

Reaction Steps

A flask was charged with (S)-3-(3-chloro-5-(trifluoromethyl)pyridin-2-ylamino)-1,4′-bipiperidin-2-one hydrochloride (0.075 g, 0.18 mmol), 2,5-dichloropyrazine (0.030 g, 0.20 mmol), Hunig's base (0.095 mL, 0.54 mmol), and DMF (3 mL). The reaction was stirred at 100° C. overnight. The organic solvents were removed under reduced pressure. The residue was purified using silica gel column chromatography with 50-100% ethyl acetate in hexanes to provide (S)-3-(3-chloro-5-(trifluoromethyl)pyridin-2-ylamino)-1′-(5-chloropyrazin-2-yl)-[1,4′-bipiperidin]-2-one (0.037 g, 0.076 mmol, 42% yield) as yellow solid. Mass spectrum (apci) m/z=489.2 (M+H).

Provenance & Evidence