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Hydrochloric Acid → (E)-3-(6-(3-tert-butoxy-3-oxoprop-1-enyl)-5-fluoropyridin-2-yl)-2-(tert-butoxycarbonylamino)propanoic acid

HRID 72643
Notes
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Reaction equation

HRID 72643 reaction equation
[C:1]([O:5][C:6](=[O:29])[CH2:7][CH2:8][C:9]1[N:14]=[C:13]([CH2:15][CH:16]([NH:20][C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[C:17]([OH:19])=[O:18])[CH:12]=[CH:11][C:10]=1[F:28])([CH3:4])([CH3:3])[CH3:2].[Li+].[OH-].Cl>C1COCC1.O.CCOC(C)=O>[C:1]([O:5][C:6](=[O:29])/[CH:7]=[CH:8]/[C:9]1[N:14]=[C:13]([CH2:15][CH:16]([NH:20][C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[C:17]([OH:19])=[O:18])[CH:12]=[CH:11][C:10]=1[F:28])([CH3:4])([CH3:2])[CH3:3]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 3

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 673667233-(6-(3-tert-Butoxy-3-oxopropyl)-5-fluoropyridin-2-yl)-2-(tert-butoxycarbonylamino)propanoic acid

Product 1

HCID 67379744(E)-3-(6-(3-tert-butoxy-3-oxoprop-1-enyl)-5-fluoropyridin-2-yl)-2-(tert-butoxycarbonylamino)propanoic acid

Reagents, catalysts & solvents 3

HCID 962
Water
Solvent
HCID 8028TetrahydrofuranSolvent
HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
0 °C

Procedure

3-(6-(3-tert-Butoxy-3-oxopropyl)-5-fluoropyridin-2-yl)-2-(tert-butoxycarbonylamino)propanoic acid. To a solution of 139C (0.68 g, 1.551 mmol) in THF (10 mL) and water (3 mL) was added LiOH (0.074 g, 3.10 mmol) at 0° C. The reaction was stirred under argon at 0° C. for 2 hrs. 1.0 N HCl (3.1 mL) was added to neutralize the reaction. The reaction mixture was diluted with EtOAc, washed with H2O and brine. The organic phase was dried over magnesium sulfate, filtered and concentrated to give a tan solid of (E)-3-(6-(3-tert-butoxy-3-oxoprop-1-enyl)-5-fluoropyridin-2-yl)-2-(tert-butoxycarbonylamino)propanoic acid. MS (ESI) m/z: 411.1 (M+H)+. To the above obtained intermediate were added catalytic amount of 10% Pd/C and MeOH (15 mL). The reaction mixture was stirred under a hydrogen balloon at rt for 1 h. Catalyst was filtered off and solvent was removed to give 139D as a tan solid. MS (ESI) m/z: 413.1 (M+H)+.

Workup

  1. customthe reaction
  2. washwashed with H2O and brine
  3. dry with materialThe organic phase was dried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-98cb352ca04e4519967462f0aae7e0af
Source dataset
uspto-grants-2014_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08828983B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes