Formaldehyde → HCID 54246973, compound

Participants

Reaction Conditions

Reaction Steps

To 5-methoxyethoxy-3-(2-(S)-pyrrolidinylmethoxy)pyridine from Example 197f (450 mg, 1.78 mmol) was added formaldehyde (37%, 8 mL) and formic acid (88%, 4 mL), and the mixture was heated at 50° C. for 4 h and then allowed cool to room temperature. The mixture was basified with saturated NaHCO3 and then extracted with Et2O. The organic layer was dried over Na2SO4 and concentrated. The residue was chromatographed (silica gel; hexane/EtOAc, 2:1) to afford the title compound (402 mg, 85%): 1H NMR (CDCl3, 300 MHz) δ 2.00-2.08 (m, 4H), 2.45 (m, 1H), 3.05 (s, 3H), 3.45 (s, 3H), 3.65 (t, 2H, J=6.0 Hz), 3.85 (t, 2H, J=6.0 Hz), 4.15 (m, 1H), 4.30-4.35 (m, 2H), 4.52 (m, 1H), 7.25 (t, 1H, J=3.0 Hz), 8.02 (br, s, 2H); MS (CI/NH3) m/z 267 (M+H)+.

Provenance & Evidence