Diethyl Ether → Ethyl 2-Aminobutyrate Hydrochloride

HRID 848

반응식

HRID 848 반응식
[NH2:1][CH:2]([CH2:6][CH3:7])[C:3]([OH:5])=[O:4].S(Cl)([Cl:10])=O.[CH2:12](OCC)[CH3:13]>C(O)C>[ClH:10].[NH2:1][CH:2]([CH2:6][CH3:7])[C:3]([O:5][CH2:12][CH3:13])=[O:4]

참가 물질

5

반응물 3

HCID 3283Diethyl EtherHCID 6657Alpha-Aminobutyric AcidHCID 24386Thionyl Chloride

생성물 1

HCID 12844023Ethyl 2-Aminobutyrate Hydrochloride

시약·촉매·용매 1

HCID 702Ethanol용매

반응 조건

온도
0 °C

실험 절차

A slurry of 2-aminobutyric acid (100 g, Aldrich) in absolute ethanol (300 ml) was stirred under nitrogen at 0° C. and thionyl chloride (120.8 g) was added dropwise. The reaction was stirred overnight at 0° C. and then gradually warmed to room temperature. The resulting white slurry was heated under reflux for 3 hours, left to cool for 10 minutes, then poured into chilled diethyl ether (600 ml), with hand stirring. The suspension was filtered and the solid product dried to give the desired product (150 g) as a white solid. 1H NMR consistent with proposed structure.

후처리

  1. temperaturegradually warmed to room temperature
  2. temperatureThe resulting white slurry was heated
  3. temperatureunder reflux for 3 hours
  4. waitleft
  5. temperatureto cool for 10 minutes
  6. additionpoured
  7. stirringwith hand stirring
  8. filtrationThe suspension was filtered
  9. customthe solid product dried

출처 및 근거

ORD 기록
ord-57d496f8cfa74e14b0b60ed9b08a5969
출처 데이터셋
uspto-grants-1998_03
특허 번호
US05723458

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