Ethyl bromoacetate → HCID 63303097, compound

HRID 1430692Notes

Reaction equation

HRID 1430692 reaction equation
[NH2:1][CH:2]1[CH2:5][N:4]([C:6]([O:8][C:9]([CH3:12])([CH3:11])[CH3:10])=[O:7])[CH2:3]1.Br[CH2:14][C:15]([O:17][CH2:18][CH3:19])=[O:16].C(=O)([O-])[O-].[K+].[K+]>CC#N>[CH2:18]([O:17][C:15](=[O:16])[CH2:14][NH:1][CH:2]1[CH2:3][N:4]([C:6]([O:8][C:9]([CH3:12])([CH3:11])[CH3:10])=[O:7])[CH2:5]1)[CH3:19]

Participants

5

Reactant 3

HCID 7748Ethyl bromoacetateHCID 11430Potassium CarbonateHCID 1516507Tert-butyl 3-aminoazetidine-1-carboxylate

Product 1

HCID 63303097HCID 63303097, compoundYield 81%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of tert-butyl 3-aminoazetidine-1-carboxylate (10.0 g, 58 mmol), ethyl 2-bromoacetate (10.7 g, 64 mmol) and potassium carbonate (24.0 g, 174 mmol) in MeCN (200 mL) was stirred at rt for 13 hrs. The reaction mixture was filtered and concentrated. The crude material was purified by silica gel column chromatography (gradient elution 0˜66% EtOAc/petroleum ether) to afford tert-butyl 3-(2-ethoxy-2-oxoethylamino)azetidine-1-carboxylate (12.1 g, 81%) as a white solid. ESI-MS (EI+, m/z): 259.0 [M+H]+.

Workup

  1. filtrationThe reaction mixture was filtered
  2. concentrationconcentrated
  3. customThe crude material was purified by silica gel column chromatography (gradient elution 0˜66% EtOAc/petroleum ether)

Sources & evidence

ORD record
ord-1ad0bdac93d543b5bd5bd088102d7f6b
Source dataset
uspto-grants-2015_01
Patent number
US08940897B2

Reaction notes

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