Hydrogen Bromide → 3-(Bromomethyl)-1-ethylpiperidine

Participants

Reaction Steps

48% Aqueous hydrogen bromide (16 ml) was added to N-ethyl-3-piperidinemethanol (1.53 g) and the stirring mixture refluxed for 6 hours. After cooling, the solvent was stripped, the residue treated with water and made basic by addition of 1M aq. potassium carbonate. The mixture was shaken with dichloromethane, filtered to remove unwanted solid, and the filtrate separated. The aqueous layer was further extracted with dichloromethane and the combined extracts washed with dilute brine, dried by passing through a phase separation cartridge and stripped to give the title compound as a pale oil (1.4 g).

Provenance & Evidence