Ethyl bromoacetate → 4-(4-Methoxy-phenyl)-4-oxo-3-phenyl-butyric acid ethyl ester

HRID 887006

반응식

HRID 887006 반응식
[H-].[Na+].[CH3:3][O:4][C:5]1[CH:10]=[CH:9][C:8]([C:11](=[O:19])[CH2:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)=[CH:7][CH:6]=1.Br[CH2:21][C:22]([O:24][CH2:25][CH3:26])=[O:23]>CS(C)=O.C1(C)C=CC=CC=1>[CH2:25]([O:24][C:22](=[O:23])[CH2:21][CH:12]([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)[C:11]([C:8]1[CH:7]=[CH:6][C:5]([O:4][CH3:3])=[CH:10][CH:9]=1)=[O:19])[CH3:26]

참가 물질

6

반응물 3

HCID 7748Ethyl bromoacetateHCID 24758Sodium hydrideHCID 2310931-(4-Methoxyphenyl)-2-phenylethan-1-one

생성물 1

HCID 134415094-(4-Methoxy-phenyl)-4-oxo-3-phenyl-butyric acid ethyl ester수율 99%

시약·촉매·용매 2

HCID 679Dimethyl Sulfoxide용매HCID 1140Toluene용매2회

실험 절차

A suspension of NaH (12.8 mmol, 512 mg) in DMSO (23 mL) was added 4′-methoxy-2-phenylacetophenone (12.8 mmol, 2.89 g) in 10 ml toluene dropwise under argon. After 30 minutes of stirring, ethyl bromoacetate (1.4 mL, 1 eq.) in 10 mL of toluene was added and the mixture was stirred at rt overnight. The reaction was quenched by addition of 2N HCl (4 mL), and then 60 mL of water. The mixture was extracted with CH2Cl2 (3×30 mL), dried over MgSO4 and concentrated under vacuum overnight to afforded 4.0 g (99%) of 4-(4-methoxy-phenyl)-4-oxo-3-phenyl-butyric acid ethyl ester.

후처리

  1. stirringthe mixture was stirred at rt overnight
  2. customThe reaction was quenched by addition of 2N HCl (4 mL)
  3. extractionThe mixture was extracted with CH2Cl2 (3×30 mL)
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated under vacuum overnight

출처 및 근거

ORD 기록
ord-1a501fcd1f934606885534729d3b3c5d
출처 데이터셋
uspto-grants-2012_08
특허 번호
US08247414B2

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