4-(3-Pyridyl)cyclohex-3-en-1-one ethylene acetal → 4-(3-Pyridyl)cyclohexanone ethylene acetal

Participants

Reaction Steps

A mixture of 4-(3-pyridyl)cyclohex-3-en-1-one ethylene ketal prepared above (26 g, 120.0 mmol) in EtOAc (240 mL), containing 10% Pd/C (3.9 g), was hydrogenated under atmospheric pressure for 24 h. At this time, an additional 1.3 g of 10% Pd/C was added and the mixture allowed to stir an additional 2.5 d under an atmosphere of hydrogen gas. The reaction mixture was filtered through a pad of celite and concentrated in vacuo to afford crude 4-(3-pyridyl)cyclohexanone ethylene ketal, which was used without further purification.

Provenance & Evidence