Hydrochloric Acid → Ethyl 3-(4-methoxy-5-oxo-3-phenyl-2,5-dihydrofuran-2-yl)propanoate

HRID 2291628노트

반응식

HRID 2291628 반응식
[OH:1][C:2]1[C:6](=[O:7])[O:5][CH:4]([CH2:8][CH2:9][C:10]([O:12][CH2:13][CH3:14])=[O:11])[C:3]=1[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.[C:21](=O)([O-])[O-].[K+].[K+].CI.Cl>CN(C)C=O>[CH3:21][O:1][C:2]1[C:6](=[O:7])[O:5][CH:4]([CH2:8][CH2:9][C:10]([O:12][CH2:13][CH3:14])=[O:11])[C:3]=1[C:15]1[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=1

참가 물질

6

반응물 4

HCID 313Hydrochloric AcidHCID 6328Methyl iodideHCID 11430Potassium CarbonateHCID 13832246HCID 13832246, 화합물

생성물 1

HCID 128354Ethyl 3-(4-methoxy-5-oxo-3-phenyl-2,5-dihydrofuran-2-yl)propanoate

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

To a mixture of ethyl 3-(4-hydroxy-5-oxo-3-phenyl-2,5-dihydro-2-furyl)propionate (86 g) and potassium carbonate (51.62 g) in N,N-dimethylformamide (855 ml) was added dropwise methyl iodide (23.25 ml) at ambient temperature with stirring and the mixture was stirred for 2.5 hours at the same temperature. The solvent was evaporated in vacuo to give a residue which was poured into diluted hydrochloric acid and extracted with ethyl acetate. The extract was washed with water and brine successively and dried. Evaporation of the solvent gave ethyl 3-(4-methoxy-5-oxo-3-phenyl-2,5-dihydro-2-furyl)propionate which was recrystallized from diisopropyl ether (73.07 g).

후처리

  1. stirringthe mixture was stirred for 2.5 hours at the same temperature
  2. customThe solvent was evaporated in vacuo
  3. customto give a residue which
  4. extractionextracted with ethyl acetate
  5. washThe extract was washed with water and brine successively
  6. customdried
  7. customEvaporation of the solvent

출처 및 근거

ORD 기록
ord-89951bb1a9a640c88d883b96d1989c7a
출처 데이터셋
uspto-grants-1989_01
특허 번호
US04797417

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