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methyl N-[(1R)-2-{[2-(benzyloxy)phenyl]amino}-1-(2,4-difluorophenyl)-2-oxoethyl]-L-leucinate → methyl N-{(1R)-1-(2,4-difluorophenyl)-2-[(2-hydroxyphenyl)amino]-2-oxoethyl}-L-leucinate

HRID 45612
Notes
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Reaction equation

HRID 45612 reaction equation
C([O:8][C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[NH:15][C:16](=[O:36])[C@H:17]([NH:26][C@H:27]([C:32]([O:34][CH3:35])=[O:33])[CH2:28][CH:29]([CH3:31])[CH3:30])[C:18]1[CH:23]=[CH:22][C:21]([F:24])=[CH:20][C:19]=1[F:25])C1C=CC=CC=1>[Pd].C(OCC)(=O)C>[F:25][C:19]1[CH:20]=[C:21]([F:24])[CH:22]=[CH:23][C:18]=1[C@@H:17]([NH:26][C@H:27]([C:32]([O:34][CH3:35])=[O:33])[CH2:28][CH:29]([CH3:30])[CH3:31])[C:16]([NH:15][C:10]1[CH:11]=[CH:12][CH:13]=[CH:14][C:9]=1[OH:8])=[O:36]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 1

HCID 45076862methyl N-[(1R)-2-{[2-(benzyloxy)phenyl]amino}-1-(2,4-difluorophenyl)-2-oxoethyl]-L-leucinate

Product 1

HCID 45076861methyl N-{(1R)-1-(2,4-difluorophenyl)-2-[(2-hydroxyphenyl)amino]-2-oxoethyl}-L-leucinateYield 92.4%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of palladium on carbon (10%, 300 mg), methyl N-[(1R)-2-{[2-(benzyloxy)phenyl]amino}-1-(2,4-difluorophenyl)-2-oxoethyl]-L-leucinate (2.88 g) and ethyl acetate (30 ml) was stirred under a hydrogen atmosphere for 3 hours. The reaction was then filtered through Celite and the filter pad was washed with further portions of ethyl acetate. The combined organic fractions were evaporated to give methyl N-{(1R)-1-(2,4-difluorophenyl)-2-[(2-hydroxyphenyl)amino]-2-oxoethyl}-L-leucinate (2.179 g).

Workup

  1. filtrationThe reaction was then filtered through Celite
  2. washthe filter pad was washed with further portions of ethyl acetate
  3. customThe combined organic fractions were evaporated

Sources & evidence

ORD record
ord-a3e3e7397f4846cea037d095faf831f0
Source dataset
uspto-grants-2013_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08541579B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes