Tetrahydrofuran → Tert-butyl 4-(2-([1,2,4]triazolo[4,3-a]pyridin-3-yl)-6-fluoroquinolin-8-yloxy)-3,3-difluoropiperidine-1-carboxylate

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Reaction Steps

tert-Butyl 3,3-difluoro-4-hydroxypiperidine-1-carboxylate (0.0706 g, 0.298 mmol) was treated with 1 M KOtBu in THF (0.283 mL, 0.283 mmol) and stirred for 15 minutes. The solution was treated with 2-([1,2,4]triazolo[4,3-a]pyridin-3-yl)-6,8-difluoroquinoline (0.042 g, 0.149 mmol) and DMF (0.80 mL) then the mixture was stirred at ambient temperature for 16 hours. The mixture was directly chromatographed on SiO2 eluting with a gradient of 2% NH4OH in isopropanol/ethyl acetate. The desired product was collected and concentrated to a colorless oil, (72 mg). MS APCI (+) m/z 500.0 (M+1) detected.

Provenance & Evidence