3-Methylmorpholine → 2-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-1-((2S)-1-(3-methylmorpholino)butan-2-yl)-2-oxopiperidin-3-yl)acetic acid

HRID 932158Notes

Reaction equation

HRID 932158 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C@@H:8]2[C@@H:13]([C:14]3[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=3)[N:12]([C@@H:21]([CH2:24][CH3:25])[CH:22]=O)[C:11](=[O:26])[C@:10]([CH2:28][C:29]([OH:31])=[O:30])([CH3:27])[CH2:9]2)[CH:5]=[CH:6][CH:7]=1.[CH3:32][CH:33]1[CH2:38][O:37][CH2:36][CH2:35][NH:34]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[Cl:1][C:2]1[CH:3]=[C:4]([C@@H:8]2[C@@H:13]([C:14]3[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=3)[N:12]([C@@H:21]([CH2:24][CH3:25])[CH2:22][N:34]3[CH2:35][CH2:36][O:37][CH2:38][CH:33]3[CH3:32])[C:11](=[O:26])[C@:10]([CH2:28][C:29]([OH:31])=[O:30])([CH3:27])[CH2:9]2)[CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 3

HCID 2921033-MethylmorpholineHCID 5049666Sodium triacetoxyborohydrideHCID 585738802-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxo-1-((S)-1-oxobutan-2-yl)piperidin-3-yl)acetic acid

Product 1

HCID 585737162-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-1-((2S)-1-(3-methylmorpholino)butan-2-yl)-2-oxopiperidin-3-yl)acetic acid

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

To a solution of 2-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxo-1-((S)-1-oxobutan-2-yl)piperidin-3-yl)acetic acid (960 mg, 2.076 mmol; Example 210, Step A) in 1,2-dichloroethane (15 mL) was added 3-methylmorpholine (Enamine Ltd, Kiev, Ukraine) (0.471 mL, 4.15 mmol) and sodium triacetoxyborohydride (880 mg, 4.15 mmol). After stirring overnight, the mixture was quenched with sat. aq. NH4Cl solution. The mixture was extracted with dichloromethane (2×). The combined organic layers were washed with sat. aq. NaCl solution, dried over anhydrous Na2SO4, and concentrated. The residue was purified by flash chromatography on silica gel (eluent: 1 to 10% methanol/dichloromethane) to afford the title compound as the major diastereomer. Stereochemistry of the 3-morpholine stereocenter is unknown.

Workup

  1. customthe mixture was quenched with sat. aq. NH4Cl solution
  2. extractionThe mixture was extracted with dichloromethane (2×)
  3. washThe combined organic layers were washed with sat. aq. NaCl solution
  4. dry with materialdried over anhydrous Na2SO4
  5. concentrationconcentrated
  6. customThe residue was purified by flash chromatography on silica gel (eluent: 1 to 10% methanol/dichloromethane)

Sources & evidence

ORD record
ord-90c1f6f79c224135b170fc5bd4b7b91f
Source dataset
uspto-grants-2016_03
Patent number
US09296736B2

Reaction notes

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