Acetic Anhydride → N-((SR)-2-((3SR,5RS,6SR)-3-allyl-5-(3-chlorophenyl)-6-(4-chlorophenyl)-2-oxopiperidin-1-yl)butyl)acetamide

Participants

Reaction Steps

To a solution of 53 mg (0.123 mmol) of (3SR,5RS,6SR)-3-allyl-1-((RS)-1-aminobutan-2-yl)-5-(3-chlorophenyl)-6-(4-chlorophenyl)piperidin-2-one (Step B) in DMF (307 μL) was added acetic anhydride (116 μL, 1.229 mmol) at 25° C. After being stirred at 25° C. for 14h the reaction was quenched (H2O) and extracted (2×EtOAc). The combined organic layers were washed with sat. NaCl solution, dried over Na2SO4, filtered and the filtrate was concentrated under reduced pressure. Separation by reversed phase HPLC (50 to 80% AcCN/H2O in 25 min, 2 injections, tR=15.683 min) provided the title compound as a yellow solid.

Provenance & Evidence