{4-[(R)-2-Oxo-6-((E)-3-oxo-4-phenyl-but-1-enyl)-piperidin-1-yl]-but-2-ynyloxy}-acetonitrile → {4-[(R)-2-Oxo-6-(3-oxo-4-phenyl-butyl)-piperidin-1-yl]-butoxy}-acetonitrile

Participants

Reaction Steps

Palladium on carbon (10 wt. %, 7 mg) was added to a solution of {4-[(R)-2-oxo-6-((E)-3-oxo-4-phenyl-but-1-enyl)-piperidin-1-yl]-but-2-ynyloxy}-acetonitrile (35 mg, 0.10 mmol) in MeOH (3.0 mL). A hydrogen atmosphere was established by evacuating and refilling with hydrogen (3×) and the reaction mixture was stirred under a balloon of hydrogen for 19 h. The reaction mixture was filtered through celite, washing with MeOH, and the filtrate was concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (CH2Cl2→2% MeOH/CH2Cl2, gradient) afforded 20 mg (56%) of the title compound.

Provenance & Evidence