Water → 5-(5-Phenyl-1-pentynyl)-3-(1-methyl-2-(s)-pyrrolidinylmethoxy)pyridine

Participants

Reaction Steps

To a solution of 5-bromo-3-(1-methyl-2-(S)-pyrrolidinylmethoxy)-pyridine (408 mg, 1.50 mmol), bis(triphenylphosphine)palladium(II) chloride (21 mg, 0.029 mmol) and copper (I) iodide (5 mg, 0.029 mmol) in CH2Cl2 (3.0 mL) and NEt3 (1.0 mL) was added 5-phenyl-1-pentyne (324 mg, 2.25 mmol). The mixture was refluxed overnight then cooled to room temperature. Water (2 mL) was added, and solid sodium bicarbonate was added until the aqueous layer was saturated. The mixture was extracted with EtOAc, which was dried over MgSO4, filtered and concentrated. The residue was chromatographed on a silica gel column, eluting with NH4OH/MeOH/EtOAc 0:1:9 and 1:10:90 to afford an oil (411 mg, 80%). MS (CI/NH3) m/z 335 (M+H)+. 1H NMR (CDCl3, 300 MHz) δ 1.65-2.10 (m, 6H), 2.26-2.37 (m, 1H), 2.41-2.47 (m, 2H), 2.48 (s, 3H), 2.61-2.73 (m, 1H), 2.76-2.83 (m, 2H), 3.07-3.16 (m, 1H), 3.89-4.03 (m, 2H), 7.17-7.36 (m, 6H), 8.21-8.26 (m, 2H).

Provenance & Evidence