Citric Acid → N-((S)-2-((3S,5R,6S)-3-allyl-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxopiperidin-1-yl)butyl)-N-methylmethanesulfonamide

HRID 932081Notes

Reaction equation

HRID 932081 reaction equation
[CH2:1]([C@@:4]1([CH3:31])[CH2:9][C@H:8]([C:10]2[CH:15]=[CH:14][CH:13]=[C:12]([Cl:16])[CH:11]=2)[C@@H:7]([C:17]2[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=2)[N:6]([C@@H:24]([CH2:28][CH3:29])[CH2:25][NH:26][CH3:27])[C:5]1=[O:30])[CH:2]=[CH2:3].[CH3:32][S:33](Cl)(=[O:35])=[O:34].N1C=CC=CC=1.C(O)(=O)CC(CC(O)=O)(C(O)=O)O>CN(C=O)C>[CH2:1]([C@@:4]1([CH3:31])[CH2:9][C@H:8]([C:10]2[CH:15]=[CH:14][CH:13]=[C:12]([Cl:16])[CH:11]=2)[C@@H:7]([C:17]2[CH:18]=[CH:19][C:20]([Cl:23])=[CH:21][CH:22]=2)[N:6]([C@@H:24]([CH2:28][CH3:29])[CH2:25][N:26]([CH3:27])[S:33]([CH3:32])(=[O:35])=[O:34])[C:5]1=[O:30])[CH:2]=[CH2:3]

Participants

6

Reactant 4

HCID 311Citric AcidHCID 1049PyridineHCID 31297Methanesulfonyl chlorideHCID 67999882(3S,5R,6S)-3-allyl-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-1-((S)-1-(methylamino)butan-2-yl)piperidin-2-one

Product 1

HCID 68000816N-((S)-2-((3S,5R,6S)-3-allyl-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxopiperidin-1-yl)butyl)-N-methylmethanesulfonamide

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
25 °C

Procedure

To a solution of (3S,5R,6S)-3-allyl-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-1-((S)-1-(methylamino)butan-2-yl)piperidin-2-one (72 mg, 0.16 mmol; Example 134 Step A) in DMF (0.40 mL) was added methanesulfonyl chloride (61 μL, 0.79 mmol) and pyridine (76 μL, 0.95 mmol) successively at 0° C. After being stirred at 25° C. for overnight, the reaction was acidified (10% citric acid) and extracted (2×EtOAc). The combined organic layers were washed (sat. aq. NaCl solution), dried (Na2SO4), and concentrated under reduced pressure. Separation by RP-HPLC (50 to 85% MeCN/H2O (0.1% TFA) a gradient elution) provided the title compound as a pale yellow film.

Workup

  1. extractionextracted (2×EtOAc)
  2. washThe combined organic layers were washed (sat. aq. NaCl solution)
  3. dry with materialdried (Na2SO4)
  4. concentrationconcentrated under reduced pressure
  5. customSeparation by RP-HPLC (50 to 85% MeCN/H2O (0.1% TFA)
  6. washa gradient elution)

Sources & evidence

ORD record
ord-0e389fc88f0d41c9ae245260f913555a
Source dataset
uspto-grants-2016_03
Patent number
US09296736B2

Reaction notes

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