Triethylamine → Perhydro-l-pyrrolizinyl methanesulfonate

Participants

Reaction Conditions

Reaction Steps

A mixture of perhydro-1-pyrrolizinol (0.5 g, 3.94 mmol) and triethylamine (0.60 g, 5.91 mmol) in dichloromethane (10 ml) was stirred at 0° C. under an atmosphere of nitrogen. Methanesulfonyl chloride (0.68 g, 5.91 mmol) was added, then the mixture was allowed to warm to ambient temperature and stirred for 8 hours. Saturated aqueous ammonium chloride (10 ml), dichloromethane (25 ml) and saturated aqueous sodium bicarboante (10 ml) were added. The organic layer was dried over magnesium sulfate filtered and the filtrate evaporated under reduced pressure to give a residue. Purification of the material by flash chromatography on silica gel using heptane/ethyl acetate (1:3) as an eluent yielded perhydro-l-pyrrolizinyl methanesulfonate (0.54 g): 1H NMR (DMSO-d6, 400 MHz) δ 4.96 (m, 1H), 3.61 (m, 1H), 2.9-3.3 (m, 6H), 2.35 (m, 1H), 1.55-2.25 (m, 6H).

Provenance & Evidence