Ethyl 3-bromopropionate → Ethyl 3-(cyclopropylamino)propanoate

HRID 963844Notes

Reaction equation

HRID 963844 reaction equation
Br[CH2:2][CH2:3][C:4]([O:6][CH2:7][CH3:8])=[O:5].[CH:9]1([NH2:12])[CH2:11][CH2:10]1>C1(C)C=CC=CC=1>[CH2:7]([O:6][C:4](=[O:5])[CH2:3][CH2:2][NH:12][CH:9]1[CH2:11][CH2:10]1)[CH3:8]

Participants

4

Reactant 2

HCID 68320Ethyl 3-bromopropionateHCID 69828Cyclopropylamine

Product 1

HCID 13456042Ethyl 3-(cyclopropylamino)propanoate

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

14.0 ml of ethyl 3-bromopropionate are added to a solution of 15.4 ml of cyclopropylamine in 100 ml of toluene and the reaction mixture is heated to 90° for 3 hours. Subsequently, the precipitated salt is filtered and the filtrate is distilled. There are obtained 9.5 g of N-cyclopropyl-β-alanine ethyl ester, Fab-MS: 157 (M+H)+.

Workup

  1. temperaturethe reaction mixture is heated to 90° for 3 hours
  2. filtrationSubsequently, the precipitated salt is filtered
  3. distillationthe filtrate is distilled

Sources & evidence

ORD record
ord-dac2e179b3db46c9bcfa592204c73265
Source dataset
uspto-grants-1998_06
Patent number
US05763604

Reaction notes

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