Formic Acid → tert-Butyl 4-(piperazin-1-yl)piperidine-1-carboxylate

Participants

Reaction Steps

A suspension of 3.01 g (7.46 mmol) of benzyl 4-(1-tert-butoxycarbonylpiperidin-4-yl)piperazine-1-carboxylate and 300 mg of Pd—C (5%) in 100 ml of methanol was mixed with 4 ml of formic acid and stirred under a hydrogen atmosphere (1 bar) at room temperature overnight. The reaction mixture was filtered through Celite, the residue on the filter was washed with methanol, and the solvent was then removed in vacuo. The residue was used without further purification in the next reaction step.

Provenance & Evidence