Citric Acid → HCID 68000146, compound

Participants

Reaction Steps

To a solution of 69 mg (0.16 mmol) of (3S,5R,6S)-3-allyl-1-((S)-1-aminobutan-2-yl)-5-(3-chlorophenyl)-6-(4-chlorophenyl)piperidin-2-one (Example 28, Step B from the non-racemic precursor described in Example 19, Step A) in 1.6 mL of DCM was added methanesulfonyl chloride (13.7 μL, 0.175 mmol) and pyridine (38.7 μL, 0.478 mmol) successively at 0° C. After being stirred at rt for 14 h the reaction mixture was acidified with 10% aq. citric acid and extracted (2×DCM). The combined organic layers were washed with sat. NaCl solution, dried over Na2SO4, filtered and the filtrate was concentrated under reduced pressure. Purification by reversed phase HPLC (40 to 90% MeCN/H2O in 45 min, 2 injections, tR=25.94 min) provided the title compound as a yellow solid.

Provenance & Evidence