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Sodium triacetoxyborohydride → 2-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-1-((S)-1-(methylamino)butan-2-yl)-2-oxopiperidin-3-yl)acetic acid-Ammonium Salt

HRID 932163
Notes
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Reaction equation

HRID 932163 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.Cl.[CH3:33][NH2:34].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl.CO.C(Cl)Cl>[NH4+:12].[Cl:1][C:2]1[CH:3]=[C:4]([C@@H:8]2[C@@H:13]([C:14]3[CH:15]=[CH:16][C:17]([Cl:20])=[CH:18][CH:19]=3)[N:12]([C@@H:21]([CH2:24][CH3:25])[CH2:22][NH:34][CH3:33])[C:11](=[O:26])[C@:10]([CH2:28][C:29]([O-:31])=[O:30])([CH3:27])[CH2:9]2)[CH:5]=[CH:6][CH:7]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 6364545Methylamine hydrochlorideHCID 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 680009242-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-1-((S)-1-(methylamino)butan-2-yl)-2-oxopiperidin-3-yl)acetic acid-Ammonium Salt

Reagents, catalysts & solvents

3
HCID 111,2-DichloroethaneSolventHCID 887MethanolSolventHCID 6344DichloromethaneSolvent

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 (201 mg, 0.434 mmol; Example 210 Step A) in DCE (3 mL) was added methylamine hydrochloride (117 mg, 1.736 mmol) followed by sodium triacetoxyborohydride (184 mg, 0.868 mmol). After 4 hours, the mixture was diluted with methanol and DCM, filtered, and concentrated. The residue was purified by flash chromatography on silica gel (eluent: 20-100% ethylacetate/hexanes followed by 6:1:0.1 DCM:MeOH:NH4OH) to afford the title compound.

Workup

  1. filtrationfiltered
  2. concentrationconcentrated
  3. customThe residue was purified by flash chromatography on silica gel (eluent: 20-100% ethylacetate/hexanes followed by 6:1:0.1 DCM:MeOH:NH4OH)

Sources & evidence

ORD record
ord-2944656de6854efbb38bc92ce123ecae
Source dataset
uspto-grants-2016_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09296736B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes