Acetic Anhydride → 1-Acetyl-4-benzoylpiperidine

Beteiligte Stoffe

Reaktionsschritte

A mixture of phenyl(piperidin-4-yl)methanone hydrochloride (743 mg, 3.29 mmol, Apollo Scientific) in DCM (13.2 mL) and TEA (1.10 mL, 7.90 mmol) was treated with Ac2O (0.373 mL, 3.95 mmol) dropwise over 1 min on an ice bath under argon, and the resulting translucent mixture was immediately removed from the ice bath and stirred at room temperature overnight. The reaction was then partitioned with 1 M HCl (1×8 mL) and 1 M NaOH (1×8 mL), and the organic layer was dried (Na2SO4), filtered, and concentrated to provide the title compound as a translucent beige oil that crystallized upon standing.

Herkunft & Nachweise