Triglyme → 3-(p-Chlorophenethyl)-8-oxa-3-azabicyclo(3.2.1)octane

Participants

Reaction Conditions

Reaction Steps

p-Chlorophenethylamine (0.643 mole, 100 grams) was added to a mixture of 2,5-bis(tosyloxymethyl)tetrahydrofuran (0.214 mole, 99.6 grams) and 200 ml of Ansul 161 (triethylene glycol dimethyl ether) and stirred the reaction mixture for 3 hours at 180° C. The reaction mixture was cooled to room temperature and neutralized with a methanolic sodium hydroxide solution (0.429 mole, 17.14 grams NaOH in 200 ml CH3OH) while stirring for 15 minutes. The solvents and excess starting amine were distilled from the reaction mixture under aspirator pressure. The residue was filtered collecting the sodium p-toluenesulfonate. The filtrate was distilled collecting one fraction (terminal pot temperature 280° C./0.1 mm Hg). The distillate which solidified was recrystallized from methanol obtaining 3-(p-chlorophenethyl)-8-oxa-3-azabicyclo(3.2.1)octane.

Provenance & Evidence