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Acetic Acid → 3-Amino-4-{(3S)-3-[(tert-butoxycarbonyl)amino]piperidin-1-yl}-6,7-dihydro-5H-cyclopenta[b]pyridin-7-yl acetate

HRID 1499450
Notes
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Reaction equation

HRID 1499450 reaction equation
[C:1]([O:4][CH:5]1[C:9]2=[N:10][CH:11]=[C:12]([N+:28]([O-])=O)[C:13]([N:14]3[CH2:19][CH2:18][CH2:17][C@H:16]([NH:20][C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[CH2:15]3)=[C:8]2[CH2:7][CH2:6]1)(=[O:3])[CH3:2].CC(O)=O.O>CCOC(C)=O.[Fe]>[C:1]([O:4][CH:5]1[C:9]2=[N:10][CH:11]=[C:12]([NH2:28])[C:13]([N:14]3[CH2:19][CH2:18][CH2:17][C@H:16]([NH:20][C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[CH2:15]3)=[C:8]2[CH2:7][CH2:6]1)(=[O:3])[CH3:2]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 176Acetic AcidHCID 962WaterHCID 867266934-{(3S)-3-[(tert-Butoxycarbonyl)amino]piperidin-1-yl}-3-nitro-6,7-dihydro-5H-cyclopenta[b]pyridin-7-yl acetate

Product 1

HCID 867266943-Amino-4-{(3S)-3-[(tert-butoxycarbonyl)amino]piperidin-1-yl}-6,7-dihydro-5H-cyclopenta[b]pyridin-7-yl acetateYield 112.7%

Reagents, catalysts & solvents 2

HCID 23925
Iron
Catalyst
HCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 4-{(3S)-3-[(tert-butoxycarbonyl)amino]piperidin-1-yl}-3-nitro-6,7-dihydro-5H-cyclopenta[b]pyridin-7-yl acetate (64 mg, 0.15 mmol), AcOH (0.90 mL), water (0.10 mL) and iron powder (149 mg, 2.66 mmol) was stirred at room temperature for 20 min. The mixture was diluted with EtOAc and filtered through a short silica gel plug. The filtrate was concentrated under reduced pressure, diluted with EtOAc and washed with aq. Na2CO3. The organic layer was dried, filtered and concentrated under reduced pressure to give the sub-title compound (66 mg) as a yellowish solid, which was used without further purification. LCMS calc. for C20H31N4O4 (M+H)+: m/z=391.2. Found: 391.1.

Workup

  1. filtrationfiltered through a short silica gel plug
  2. concentrationThe filtrate was concentrated under reduced pressure
  3. additiondiluted with EtOAc
  4. washwashed with aq. Na2CO3
  5. customThe organic layer was dried
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-3959d7fe20114cdebca0cff58a12351d
Source dataset
uspto-grants-2015_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09200004B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes