Hydrochloric Acid → Diethyl 2-benzyloxycarbonylamino-2-(isopropyloxycarbonylmethyl)malonate

HRID 471345

반응식

HRID 471345 반응식
[CH2:1]([O:8][C:9]([NH:11][CH:12]([C:18]([O:20][CH2:21][CH3:22])=[O:19])[C:13]([O:15][CH2:16][CH3:17])=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].[I-].[K+].Br[CH2:32][C:33]([O:35][CH:36]([CH3:38])[CH3:37])=[O:34].Cl>CN(C=O)C>[CH2:1]([O:8][C:9]([NH:11][C:12]([CH2:32][C:33]([O:35][CH:36]([CH3:38])[CH3:37])=[O:34])([C:13]([O:15][CH2:16][CH3:17])=[O:14])[C:18]([O:20][CH2:21][CH3:22])=[O:19])=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

참가 물질

7

반응 조건

온도
50 °C

실험 절차

A suspension of diethyl 2-benzyloxycarbonylaminomalonate (5.0 g), potassium carbonate (2.7 g), potassium iodide (0.32 g), and isopropyl 2-bromoacetate (3.5 g) in DMF (50 mL) was stirred at 50° C. for 1 hour. The reaction mixture was cooled, and then poured into diluted hydrochloric acid, the mixture was extracted with ethyl acetate, and the extract was washed with saturated brine, and then dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was subjected to silica gel column chromatography, and then purification was performed with n-hexane/ethyl acetate (5:1), to obtain the title compound (6.8 g, yield: 99%) as colorless oil.

후처리

  1. temperatureThe reaction mixture was cooled
  2. extractionthe mixture was extracted with ethyl acetate
  3. washthe extract was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. custompurification

출처 및 근거

ORD 기록
ord-acc4725643c948c181d150d2b2309f95
출처 데이터셋
uspto-grants-2014_01
특허 번호
US08633001B2

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