Water → 3-[4-(1,1-Dimethylethyl)phenyl]pyrrolidine

Participants

Reaction Steps

98 g (1 mole) of concentrated sulfuric acid were added dropwise to 29.4 g (0.2 mole) of 3-phenylpyrrolidine in 400 ml of carbon tetrachloride at 0°-5° C. After 15 minutes, 15.2 g (0.27 mole) of isobutylene were passed in gaseous form, the mixture was stirred for 1 hour at 0°-5° C. and hydrolysis was carried out with 400 ml of water at 20° C. The organic phase was separated off and the aqueous phase was extracted with twice 100 ml of dichloromethane. Working up of the organic phases gave 42 g of a crude product, which was fractionated under reduced pressure to give 13.4 g (33%) of a colorless oil of boiling point 84°-87° C./0.5 mbar.

Provenance & Evidence