Lithium Chloride → benzyl(4S,5S)-5-{(2S)-2-[(tert-butoxycarbonyl)amino]-3-phenylpropyl}-2,2-dimethyl-4-[4-(5-methyl-2-pyridinyl)benzyl]-1,3-oxazolidine-3-carboxylate

HRID 1174239Notes

Reaction equation

HRID 1174239 reaction equation
[C:1]([O:5][C:6]([NH:8][C@@H:9]([CH2:42][C:43]1[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=1)[CH2:10][C@@H:11]1[O:15][C:14]([CH3:17])([CH3:16])[N:13]([C:18]([O:20][CH2:21][C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)=[O:19])[C@H:12]1[CH2:28][C:29]1[CH:34]=[CH:33][C:32](OC(=O)C(F)(F)F)=[CH:31][CH:30]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[Li+].[Cl-].[CH3:51][C:52]1[CH:53]=[CH:54][C:55]([Sn](CCCC)(CCCC)CCCC)=[N:56][CH:57]=1>CN(C=O)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[C:1]([O:5][C:6]([NH:8][C@@H:9]([CH2:42][C:43]1[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=1)[CH2:10][C@@H:11]1[O:15][C:14]([CH3:16])([CH3:17])[N:13]([C:18]([O:20][CH2:21][C:22]2[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=2)=[O:19])[C@H:12]1[CH2:28][C:29]1[CH:30]=[CH:31][C:32]([C:55]2[CH:54]=[CH:53][C:52]([CH3:51])=[CH:57][N:56]=2)=[CH:33][CH:34]=1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

Participants

6

Reactant 3

HCID 433294Lithium ChlorideHCID 111327115-Methyl-2-(tri-n-butylstannyl)pyridineHCID 67407042benzyl(4S,5S)-5-{(2S)-2-[(tert-butoxycarbonyl)amino]-3-phenylpropyl}-2,2-dimethyl-4-{4-[(trifluoroacetyl)oxy]benzyl}-1,3-oxazolidine-3-carboxylate

Product 1

HCID 67405979benzyl(4S,5S)-5-{(2S)-2-[(tert-butoxycarbonyl)amino]-3-phenylpropyl}-2,2-dimethyl-4-[4-(5-methyl-2-pyridinyl)benzyl]-1,3-oxazolidine-3-carboxylateYield 42%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 6228DimethylformamideSolvent

Procedure

A solution containing the product from Example 23I (0.114 g, 0.162 mmol) in DMF (1.6 mL) was treated with LiCl (0.068 g, 1.60 mmol), dichlorobis(triphenylphosphine)palladium(II) (0.034 g, 0.048 mmol), and the product from Example 74A (0.367 g, 0.961 mmol), heated at 100° C. for 16 hours, cooled and partitioned between ethyl acetate and water. The organic phase was washed with brine and dried over MgSO4, filtered and concentrated. The residue was chromatographed on silica gel eluting with 0-15% ethyl acetate in dichloromethane. The product was purified by reversed phase chromatography on a C18 column eluting with 5-100% acetonitrile in water (0.1% TFA) to give the title compound (0.044 g, 42% yield).

Workup

  1. temperaturecooled
  2. custompartitioned between ethyl acetate and water
  3. washThe organic phase was washed with brine
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was chromatographed on silica gel eluting with 0-15% ethyl acetate in dichloromethane
  8. customThe product was purified by reversed phase chromatography on a C18 column
  9. washeluting with 5-100% acetonitrile in water (0.1% TFA)

Sources & evidence

ORD record
ord-39d904614e7343108c05b1328e582f12
Source dataset
uspto-grants-2010_11
Patent number
US07834043B2

Reaction notes

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