1-Phenethylamine → N-((1R)-1-Phenylethyl)glycine ethyl ester

HRID 1816987

Reaction equation

HRID 1816987 reaction equation
Br[CH2:2][C:3]([O:5][CH2:6][CH3:7])=[O:4].[CH3:8][CH:9]([NH2:16])[C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1.C(N(C(C)C)C(C)C)C>C1(C)C=CC=CC=1>[C:10]1([C@H:9]([NH:16][CH2:2][C:3]([O:5][CH2:6][CH3:7])=[O:4])[CH3:8])[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1

Participants

5

Reactant 3

HCID 74081-PhenethylamineHCID 7748Ethyl bromoacetateHCID 81531Diisopropylethylamine

Product 1

HCID 6455333N-((1R)-1-Phenylethyl)glycine ethyl esterYield 63%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

Ethyl bromoacetate (4.14 g; 24.8 mmol) was treated with (R) α-methylbenzylamine (3 g, 24.8 mmol) and ethyldiisopropylamine (3.2 g; 24.8 mmol) in toluene (100 mL). After heating at reflux for 18 hours, the mixture was cooled to room temperature and concentrated under reduced pressure. The residue was purified by flash chromatography (SiO2, 20% ethyl acetate/pentane) to provide the title compound (3.2 g, 63% yield). MS (DCI/NH3) m/z 208 (M+H)+.

Workup

  1. temperatureAfter heating
  2. temperatureat reflux for 18 hours
  3. concentrationconcentrated under reduced pressure
  4. customThe residue was purified by flash chromatography (SiO2, 20% ethyl acetate/pentane)

Sources & evidence

ORD record
ord-d4992ccea61c46c592f1da814bf790d5
Source dataset
uspto-grants-2009_10
Patent number
US07598236B2

Linked notes

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