Hydrochloric Acid → 2-([1,2,4]Triazolo[4,3-a]pyridin-3-yl)-8-((cis)-3-fluoropiperidin-4-yloxy)quinoline

Participants

Reaction Conditions

Reaction Steps

Enantiomer 1 of (cis)-benzyl 4-(2-([1,2,4]triazolo[4,3-a]pyridin-3-yl)quinolin-8-yloxy)-3-fluoropiperidine-1-carboxylate (0.185 g, 0.372 mmol) was dissolved in dioxane (4.6 mL) and treated with 6 M hydrogen chloride (4.65 mL, 27.9 mmol) and the reaction mixture was heated at 100° C. for 2 hours. The reaction was cooled and carefully neutralized with solid NaHCO3. The resulting aqueous layer (pH 8-9) was extracted four times with methylene chloride and the resulting organic layers were combined and dried over Na2SO4 then concentrated in vacuo. The residue was chromatographed on SiO2 eluting with a gradient of 6% NH4OH in MeOH)/methylene chloride. The desired material was isolated as a colorless film (22 mg). MS APCI (+) m/z 364.1 (M+1) detected.

Provenance & Evidence