Water → 1-Benzyl-4-diethylamino-3-pyrrolidinol

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). 21.9 g (0.3 mol) of diethylamine (produced by Katayama Chemical Industry Co., Ltd.) was continuously added to the reaction mixture and stirred for 5 hours under reflux. After completion, acetone and excess diethylamine were evaporated under reduced pressure, and extracted with toluene and water. After the solvent was evaporated under reduced pressure, 18.4 g of 1-benzyl-4-diethylamino-3-pyrrolidinol (yield 73.9%) was obtained.

Provenance & Evidence