Reaktion #430046

ord-57d667095fe445b4895e42c5c900e60d

Reaktionsgleichung

O=S(Cl)Cl
Thionyl chloride
CCC(N)C(=O)O
2-aminobutyric acid
CCO
ethanol
CCOC(=O)C(N)CC.Cl
desired product
Ausbeute 97.0%
CCOC(=O)C(N)CC.Cl
Ethyl 2-aminobutyrate hydrochloride
Ausbeute 97.0%

Reaktionsbedingungen

Temperatur
27°CELSIUS
Detaillierte Bedingungen
See reaction.notes.procedure_details.

Aufarbeitung

  1. 1
    workup.ADDITIONWhen addition
  2. 2
    Filtrationthe resulting precipitate filtered off
  3. 3
    Waschenwashed with methyl t-butyl ether

Vorschrift

Thionyl chloride (1.25 moles) was added to a solution of 2-aminobutyric acid (1 mole) in SD12A3 (95% ethanol/5% toluene) at a temperature of <5° C. When addition was complete, the mixture was stirred at 27° C. for 16 hours and the resulting precipitate filtered off and washed with methyl t-butyl ether to give the desired product as a white solid (97% yield).

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US05859240uspto-grants-1999_01