Acetylphenylalanine methyl ester → N-acetylphenylalanine aldehyde

HRID 1371260

반응식

HRID 1371260 반응식
C[O:2][C:3](=O)[C@H:4]([CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)[NH:5][C:6](=[O:8])[CH3:7].[H-].C([Al+]CC(C)C)C(C)C>COCCOC.C1(C)C=CC=CC=1>[C:6]([NH:5][C@H:4]([CH:3]=[O:2])[CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)(=[O:8])[CH3:7]

참가 물질

5

반응물 2

HCID 704002Acetylphenylalanine methyl esterHCID 21225700Diisobutylaluminumhydride

생성물 1

HCID 193217N-acetylphenylalanine aldehyde수율 74.3%

시약·촉매·용매 2

HCID 1140Toluene용매HCID 80711,2-Dimethoxyethane용매

반응 조건

온도
-70 °C

실험 절차

N-Acetylphenylalanine methyl ester (4.2 g, 19 mmol) is dissolved in ethylene glycol dimethyl ether. The solution is cooled to −70° C. and diisobutylaluminum hydride (25.3 mL of a 1.5M solution in toluene, 39 mmol) is added. The resulting reaction mixture is stirred at −70° C. for 2 hours. The reaction is quenched by addition of 2N hydrochloric acid. The mixture is extracted 4 times with cold ethyl acetate and 4 times with toluene. The extracts are combined, washed with brine and dried over magnesium sulfate. Concentration in vacuo followed by silica gel chromatography furnishes 2.7 g of a white solid. The NMR is as reported in the literature, Biochemistry, 18: 921–926 (1979).

후처리

  1. customThe resulting reaction mixture
  2. customThe reaction is quenched by addition of 2N hydrochloric acid
  3. extractionThe mixture is extracted 4 times with cold ethyl acetate and 4 times with toluene
  4. washwashed with brine
  5. dry with materialdried over magnesium sulfate
  6. concentrationConcentration in vacuo

출처 및 근거

ORD 기록
ord-94035ab7620241518e18013fb8ecf6b4
출처 데이터셋
uspto-grants-2007_01
특허 번호
US07157426B2

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