1-Hydroxybenzotriazole → tert-Butyl [({[(2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]oct-2-yl]carbonyl}amino)oxy]acetate

HRID 2400652Notes

Reaction equation

HRID 2400652 reaction equation
[CH2:1]([O:8][N:9]1[C:15](=[O:16])[N:14]2[CH2:17][C@H:10]1[CH2:11][CH2:12][C@H:13]2[C:18]([OH:20])=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:21]([O:25][C:26](=[O:30])[CH2:27][O:28][NH2:29])([CH3:24])([CH3:23])[CH3:22].ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C>C(Cl)Cl>[C:21]([O:25][C:26](=[O:30])[CH2:27][O:28][NH:29][C:18]([C@@H:13]1[CH2:12][CH2:11][C@@H:10]2[CH2:17][N:14]1[C:15](=[O:16])[N:9]2[O:8][CH2:1][C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)=[O:20])([CH3:24])([CH3:23])[CH3:22]

Participants

6

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 12919121tert-Butyl (aminooxy)acetateHCID 57389355(2S,5R)-6-(Benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid

Product 1

HCID 86699610tert-Butyl [({[(2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]oct-2-yl]carbonyl}amino)oxy]acetateYield 79%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of (2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid 1 (0.20 g, 0.72 mmol) in dry DCM (20 mL) were added tert-butyl(aminooxy)acetate 88 (0.13 g, 0.86 mmol, Organic Letters, 2002, 4(6) 869-872), 1-hydroxybenzotriazole (0.15 g, 1.11 mmol) and 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.21 g, 1.10 mmol) at room temperature. The reaction mixture was stirred at room temperature overnight and concentrated under vacuum. The residue was purified by column chromatography to give tert-butyl[({[(2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]oct-2-yl]carbonyl}amino)oxy]acetate 89 (0.23 g, 79%) as a white solid.

Workup

  1. concentrationconcentrated under vacuum
  2. customThe residue was purified by column chromatography

Sources & evidence

ORD record
ord-8657b593fe3e478d864f8573fc1851bd
Source dataset
uspto-grants-2014_08
Patent number
US08796257B2

Reaction notes

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