Acetic Acid → (3S,5R,6S)-3-allyl-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-1-((S)-1-(methylamino)butan-2-yl)piperidin-2-one

Participants

Reaction Steps

To a solution of (S)-2-((3S,5R,6S)-3-allyl-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxopiperidin-1-yl)butanal (70 mg, 0.16 mmol; Example 91, Step C) and acetic acid (271 μL, 4.73 mmol) in ClCH2CH2Cl (2.6 mL) was added 2 M methylamine in THF (788 μL, 1.58 mmol) and sodium triacetoxyborohydride (100 mg, 0.47 mmol) at rt. After being stirred at rt for 3 h, the reaction was quenched (sat aq. NaHCO3), extracted (2×EtOAc), and washed (sat. aq. NaCl solution). The combined organic layers were dried (Na2SO4) and concentrated under reduced pressure to provide the crude title compound as a pale yellow film. The product was used in the next step without further purification.

Provenance & Evidence