Methanol → HCID 15076313, compound

Participants

Reaction Steps

To a solution of 1-benzyl-1-azoniabicyclo[2.2.1]heptane-4-carboxylate (3.25 g) in MeOH was added 10% Pd carbon with a 50% hydration (650 mg), followed by stirring at room temperature for 5 hours under a hydrogen atmosphere of 3 atm. The reaction mixture was filtered through Celite and the filtrate was concentrated. The residue was dissolved in MeOH and added with sulfuric acid (3 mL), followed by heating under reflux for 1 hour. The reaction mixture was neutralized with an aqueous K2CO3 solution and extracted with EtOAc. The organic layer was washed with water and brine in this order, dried over MgSO4, and then concentrated under reduced pressure. The residue was purified by medium-pressure preparative liquid chromatography (silica gel, YAMAZEN YFLC WPrep2XY, CHCl3: MeOH: 28% aqueous ammonia) to obtain methyl 1-azabicyclo[2.2.1]heptane-4-carboxylate (890 mg) as a colorless oily substance.

Provenance & Evidence