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Water → Ethyl 3-bromobenzyloxyacetate

HRID 54192
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HRID 54192 반응식
[Br:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][CH:9]=1)[CH2:5][OH:6].Br[CH2:11][C:12]([O:14][CH2:15][CH3:16])=[O:13].O>CN(C)C=O>[Br:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][CH:9]=1)[CH2:5][O:6][CH2:11][C:12]([O:14][CH2:15][CH3:16])=[O:13]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 962WaterHCID 7748Ethyl bromoacetateHCID 851413-Bromobenzyl alcohol

생성물 1

HCID 19958320Ethyl 3-bromobenzyloxyacetate수율 80.5%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

Part A: 3-Bromobenzyl alcohol (2.0 g) was dissolved in dimethyl formamide (50 ml) in a dry 100 ml flask under nitrogen. Sodium hydride (0.5 g of a 60% suspension in mineral oil, washed with hexane, 11.8 mmol) was added in portions and the mixture was stirred for one hour at room temperature. Ethyl bromoacetate (1.2 ml, 11.8 mmol) was added drop-wise and the reaction was stirred overnight at room temperature then mixed with water (150 ml) and extracted with methylene chloride (3×20 ml). The extracts were combined, washed with water (50 ml), saturated sodium chloride solution (50 ml) and then dried (MgSO4). The solution was filtered and concentrated and the residue was purified by flash chromatography (SiO2, gradient hexane to ethyl acetate) which gave 2.35 g (80%) of ethyl 3-bromobenzyloxyacetate as an oil.

후처리

  1. washSodium hydride (0.5 g of a 60% suspension in mineral oil, washed with hexane, 11.8 mmol)
  2. additionwas added in portions
  3. stirringthe reaction was stirred overnight at room temperature
  4. extractionextracted with methylene chloride (3×20 ml)
  5. washwashed with water (50 ml), saturated sodium chloride solution (50 ml)
  6. dry with materialdried (MgSO4)
  7. filtrationThe solution was filtered
  8. concentrationconcentrated
  9. customthe residue was purified by flash chromatography (SiO2, gradient hexane to ethyl acetate) which

출처 및 근거

ORD 기록
ord-4ee2eba34d474c2499c65a8ee03e448f
출처 데이터셋
uspto-grants-1997_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05622937

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