Trifluoroacetic acid → HCID 57904713, compound

Participants

Reaction Conditions

Reaction Steps

tert-Butyl 4-[(methylsulfonyl)oxy]piperidine-1-carboxylate (1.1 g), 2-methylpyridin-3-ol (500 mg), potassium carbonate (1.7 g), and DMF (10 ml) were mixed, followed by stirring at 100° C. for 6 hours. The reaction mixture was concentrated under reduced pressure, and CHCl3 and a saturated aqueous sodium hydrogen carbonate solution were then added thereto. The organic layer was dried over Na2SO4 and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (CHCl3/MeOH). The purified product thus obtained was mixed with DCE (10 ml), and TFA (4.5 g) was added thereto, followed by stirring at room temperature for 3 hours. The reaction mixture was concentrated under reduced pressure, and CHCl3 and a 1M aqueous NaOH solution were the added thereto, and the organic layer was dried over Na2SO4 and concentrated under reduced pressure to obtain 2-methyl-3-(piperidin-4-yloxy)pyridine (355 mg).

Provenance & Evidence