tert-Butanol → 2-({2-[(1-Methylpiperidin-4-yl)oxy]pyridin-3-yl}oxy)ethanol

Participants

Reaction Conditions

Reaction Steps

A solution of 2-chloro-3-[2-(tetrahydro-2H-pyran-2-yloxy)ethoxy]pyridine (from Example 4; 100 mg, 0.39 mmol), 4-hydroxy-N-methylpiperidine (67 μl, 0.58 mmol) and 1.0 M potassium tert-butoxide in tert-butanol (0.8 mL, 0.80 mmol) in 4 mL of toluene was heated at 100° C. for 1 day. The organic phase was washed with 3×2 mL of water and 2 mL of brine. The organic phase was shaken at 50° C. with 4 mL of 2.0 M acetic acid for 2 days. The aqueous phase was washed with 3×3 mL of ethyl acetate, made basic by addition of potassium hydroxide, saturated with sodium chloride and extracted with 3×2 mL of ethyl acetate. The organic phase was dried (MgSO4) and concentrated under reduced pressure to give 62 mg (0.25 mmol, 63%) of the title compound as a colorless oil. LC-UV purity 95%. MS m/z 253 (M+1)+, calc. 253 (M+1)+.

Provenance & Evidence