Water → 3-Benzyl-6-oxa-3-azabicyclo(3.1.0)hexane

Participants

Reaction Steps

To a solution of 15.9 g (0.1 mol) of 1-benzyl-3-pyrroline, 12.0 g (0.12 mol) of 98% sulfuric acid, 15.0 g of water, and 60.0 g of acetone in a quartz round flask reactor, 45.6 g (0.20 mol) of (NH4)2S2O8 (ammonium peroxydisulfate produced by Mitsubishi Gas Chemical Industry Co., Ltd.) was added with stirring and allowed to react for 5 days at room temperature with irradiation by 500 W Xe lamps (UXL-500D xenon lamp produced by Ushio). After completion, acetone was evaporated under reduced pressure, neutralized by NaOH (aq), extracted with toluene and water. After the solvent was evaporated under reduced pressure, 16.6 g of 1-benzyl-3,4-epoxypyrrolidine (yield 94.7%) was obtained and 1-benzyl-3-pyrroline was not recovered.

Provenance & Evidence