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Sodium hydride → Ethyl 3-(2-bromo-3,4,5,6-tetramethoxyphenyl)-2-ethoxycarbonyl-2-[3-(4-ethoxycarbonylphenoxy)propyl]propionate

HRID 2268484
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HRID 2268484 반응식
[CH2:1]([O:3][C:4]([CH:6]([CH2:12][CH2:13][CH2:14][O:15][C:16]1[CH:21]=[CH:20][C:19]([C:22]([O:24][CH2:25][CH3:26])=[O:23])=[CH:18][CH:17]=1)[C:7]([O:9][CH2:10][CH3:11])=[O:8])=[O:5])[CH3:2].[H-].[Na+].[Br:29][C:30]1[C:35]([CH2:36]Br)=[C:34]([O:38][CH3:39])[C:33]([O:40][CH3:41])=[C:32]([O:42][CH3:43])[C:31]=1[O:44][CH3:45]>CN(C=O)C.O>[Br:29][C:30]1[C:31]([O:44][CH3:45])=[C:32]([O:42][CH3:43])[C:33]([O:40][CH3:41])=[C:34]([O:38][CH3:39])[C:35]=1[CH2:36][C:6]([C:7]([O:9][CH2:10][CH3:11])=[O:8])([CH2:12][CH2:13][CH2:14][O:15][C:16]1[CH:17]=[CH:18][C:19]([C:22]([O:24][CH2:25][CH3:26])=[O:23])=[CH:20][CH:21]=1)[C:4]([O:3][CH2:1][CH3:2])=[O:5]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

6

반응물 3

HCID 24758Sodium hydrideHCID 18348516Ethyl 2-ethoxycarbonyl-5-(4-ethoxycarbonylphenoxy)pentanoateHCID 183486201-Bromo-6-bromomethyl-2,3,4,5-tetramethoxybenzene

생성물 1

HCID 18348578Ethyl 3-(2-bromo-3,4,5,6-tetramethoxyphenyl)-2-ethoxycarbonyl-2-[3-(4-ethoxycarbonylphenoxy)propyl]propionate수율 91.9%

시약·촉매·용매 2

HCID 962
Water
용매
HCID 6228Dimethylformamide용매2회

실험 절차

To a solution of ethyl 2-ethoxycarbonyl-5-(4-ethoxycarbonylphenoxy)pentanoate (25.9 g) in DMF (200 ml) was portionwise added sodium hydride (60% oil dispersion, 3.11 g) with cooling with ice. The reaction mixture was allowed to warm to room temperature and stirred for 30 min. To the reaction mixture was dropwise added a solution of 1-bromo-6-bromomethyl-2,3,4,5-tetramethoxybenzene (28.8 g) in DMF (50 ml) with cooling with ice. The reaction mixture was allowed to warm to room temperature and stirred for 6 hr. The reaction mixture was diluted with water and extracted with diethyl ether. The organic layer was washed with water and saturated aqueous sodium chloride and dried. The solvent was removed in vacuo. The residue was purified by silica gel column chromatography (hexane to hexane:ethyl acetate=7:1) to yield the entitled compound (42.6 g) as an oil.

후처리

  1. temperaturewith cooling with ice
  2. temperaturewith cooling with ice
  3. temperatureto warm to room temperature
  4. stirringstirred for 6 hr
  5. extractionextracted with diethyl ether
  6. washThe organic layer was washed with water and saturated aqueous sodium chloride
  7. customdried
  8. customThe solvent was removed in vacuo
  9. customThe residue was purified by silica gel column chromatography (hexane to hexane:ethyl acetate=7:1)

출처 및 근거

ORD 기록
ord-5ba8861c6fef4141be1bde60624f5c67
출처 데이터셋
uspto-grants-2001_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06326369B1

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