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Potassium Carbonate → (8S,9aS)-8-hydroxy-2-[5-(trifluoromethyl)pyridin-2-yl]octahydro-5H-pyrrolo[1,2-a][1,4]diazepin-5-one

HRID 1050303
Notes
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Reaction equation

HRID 1050303 reaction equation
[N+](C1C=CC(C([O:10][C@@H:11]2[CH2:31][N:14]3[C:15](=[O:30])[CH2:16][CH2:17][N:18]([C:20]4[CH:25]=[CH:24][C:23]([C:26]([F:29])([F:28])[F:27])=[CH:22][N:21]=4)[CH2:19][C@@H:13]3[CH2:12]2)=O)=CC=1)([O-])=O.C(=O)([O-])[O-].[K+].[K+].C(OCC)(=O)C.CO>CO>[OH:10][C@@H:11]1[CH2:31][N:14]2[C:15](=[O:30])[CH2:16][CH2:17][N:18]([C:20]3[CH:25]=[CH:24][C:23]([C:26]([F:28])([F:29])[F:27])=[CH:22][N:21]=3)[CH2:19][C@@H:13]2[CH2:12]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 21584119Ethylacetate methanolHCID 86723183(8S,9aS)-5-oxo-2-[5-(trifluoromethyl)pyridin-2-yl]octahydro-1H-pyrrolo[1,2-a][1,4]diazepin-8-yl 4-nitrobenzoate

Product 1

HCID 86723184(8S,9aS)-8-hydroxy-2-[5-(trifluoromethyl)pyridin-2-yl]octahydro-5H-pyrrolo[1,2-a][1,4]diazepin-5-oneYield 85%

Reagents, catalysts & solvents 1

HCID 887
Methanol
Solvent

Procedure

To (8S,9aS)-5-oxo-2-[5-(trifluoromethyl)pyridin-2-yl]octahydro-1H-pyrrolo[1,2-a][1,4]diazepin-8-yl 4-nitrobenzoate (135 mg, 0.291 mmol, Part C) in methanol (2.5 mL) was added potassium carbonate (24 mg, 0.174 mmol). The mixture was stirred at room temperature for 1.5 hours and then concentrated. The residue was purified by chromatography on silica gel (ethyl acetate, then ethyl acetate/methanol=10:1) to give 78 mg (85% yield) of the titled compound as a solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 1.72 (m, 1H), 2.28 (m, 1 H), 2.45 (m, 1H), 2.63 (m, 1 H), 3.35 (m, 3 H), 3.44 (m, 1 H), 3.92 (m, 1H), 4.17 (m, 1H), 4.42 (m, 2H), 5.09 (br s, 1H), 7.00 (d, J=8 Hz, 1 H), 7.80 (d, J=8 Hz, 1 H), 8.43 (s, 1 H); MS (ESI) m/z 316.0 (M+H)+.

Workup

  1. concentrationconcentrated
  2. customThe residue was purified by chromatography on silica gel (ethyl acetate

Sources & evidence

ORD record
ord-f519aac4d3ab4941b8310ba5d0169191
Source dataset
uspto-grants-2016_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09382258B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes