2-Methylpropanehydrazide → (2R,5S)-6-(benzyloxy)-N'-(2-methylpropanoyl)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carbohydrazide

HRID 2400705Notes

Reaction equation

HRID 2400705 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.[CH3:21][CH:22]([CH3:27])[C:23]([NH:25][NH2:26])=[O:24].ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C>C(Cl)Cl.CN(C)C1C=CN=CC=1>[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]([NH:26][NH:25][C:23](=[O:24])[CH:22]([CH3:27])[CH3:21])=[O:20])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

7

Reactant 4

HCID 192392-MethylpropanehydrazideHCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 57389355(2S,5R)-6-(Benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid

Product 1

HCID 86694038(2R,5S)-6-(benzyloxy)-N'-(2-methylpropanoyl)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carbohydrazideYield 92.6%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

To a solution of (2S,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carboxylic acid 1 (0.25 g, 0.90 mmol) in dry DCM (20 mL) were added 2-methylpropanehydrazide 193 (0.14 g, 1.35 mmol), 1-hydroxybenzotriazole (0.19 g, 1.35 mmol), 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.26 g, 1.35 mmol) and 4-(dimethylamino)pyridine (0.16 g, 1.35 mmol) at room temperature. The reaction mixture was stirred at room temperature overnight, and then concentrated under vacuum. The residue was purified by column chromatography to give (2R,5S)-6-(benzyloxy)-N′-(2-methylpropanoyl)-7-oxo-1,6-diazabicyclo[3.2.1]octane-2-carbohydrazide 194 (0.30 g, 92.6%) as a white solid.

Workup

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

Sources & evidence

ORD record
ord-d37d53fe5a4941069ed0390d50671bcf
Source dataset
uspto-grants-2014_08
Patent number
US08796257B2

Reaction notes

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