Triethylamine → 5-Chloro-2-(hexahydro-1H-7a-pyrrolizinyl)furo[3,2-b]pyridine

Participants

Reaction Steps

7a-Ethynyl-hexahydro-1H-pyrrolizine from Example 15b (225 mg, 1.66 mol, 6-chloro-2-iodo-3-pyridinol (509 mg, 2.0 mmol), copper(I) iodide (60 mg, 0.30 mmol), bis(triphenylphosphine)palladium(II) chloride (58 mg, 0.08 mmol) and triethylamine (0.280 mL, 2.0 mmol) were combined in a similar fashion as that described in Example 15c. The crude product was chromatographed (silica gel; CHCl3 /MeOH, 97.5:2.5) to afford a waxy tan solid (335 mg, 77%): 1H NMR (CDCl3, 300 MHz) δ 1.88-1.97 (m, 6H), 2.21-2.33 (m, 2H), 2.67-2.79 (m, 2H), 3.19-3.26 (m, 2H), 6.70 (s, 1H), 7.14 (d, J=8.5 Hz, 1H), 7.61 (d, J=8.5 Hz, 1H); MS (CI/NH3) m/z: 263 (M+H)+.

Provenance & Evidence