Potassium Carbonate → 1-(3-Butynyl)-4-benzylpiperidine

Participants

Reaction Steps

A mixture of 1-mesylbut-3-yne (3.03 g, 20.0 mmol), 4-benzylpiperidine (4.21 g, 24.0 mmol) and K2CO3 (8.28 g, 60.0 mmol) in 50 mL of CH3CN is refluxed for 12 hr. The mixture is filtered and washed with EtOAc (3×30 mL). The filtrate is evaporated in vacuo and is purified by flash chromatography to give the product as pale yellow oil (4.30 g, 95%): 1H NMR (CDCl3) 1.32 (m, 2 H), 1.51 (m, 1 H), 1.65 (m, 2 H), 1.94 (m, 3 H), 2.36 (m, 2 H), 2.54 (m, 4 H), 2.86 (d, J=11.4 Hz, 2 H), 7.12-7.27 (m, 5 H).

Provenance & Evidence