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Benzimidazole → 1-[2-(1,2,3,4-Tetramethoxy-6,7,8,9-tetrahydro-5H-benzo[a]cyclohepten-7-yl)ethyl]-1H-benzo[d]imidazole

HRID 2268506
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HRID 2268506 반응식
I[CH2:2][CH2:3][CH:4]1[CH2:10][CH2:9][C:8]2[C:11]([O:21][CH3:22])=[C:12]([O:19][CH3:20])[C:13]([O:17][CH3:18])=[C:14]([O:15][CH3:16])[C:7]=2[CH2:6][CH2:5]1.[N:23]1[C:27]2[CH:28]=[CH:29][CH:30]=[CH:31][C:26]=2[NH:25][CH:24]=1.C(=O)([O-])[O-].[Na+].[Na+]>CN(C=O)C.O>[CH3:16][O:15][C:14]1[C:7]2[CH2:6][CH2:5][CH:4]([CH2:3][CH2:2][N:23]3[C:27]4[CH:28]=[CH:29][CH:30]=[CH:31][C:26]=4[N:25]=[CH:24]3)[CH2:10][CH2:9][C:8]=2[C:11]([O:21][CH3:22])=[C:12]([O:19][CH3:20])[C:13]=1[O:17][CH3:18]
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참가 물질

6

반응물 3

HCID 5798BenzimidazoleHCID 10340Sodium CarbonateHCID 183485187-(2-Iodoethyl)-1,2,3,4-tetramethoxy-6,7,8,9-tetrahydro-5H-benzo[a]cycloheptene

생성물 1

HCID 183485591-[2-(1,2,3,4-Tetramethoxy-6,7,8,9-tetrahydro-5H-benzo[a]cyclohepten-7-yl)ethyl]-1H-benzo[d]imidazole수율 32.8%

시약·촉매·용매 2

HCID 962Water용매
HCID 6228
Dimethylformamide
용매

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온도
70 °C

실험 절차

A mixture of 7-(2-iodoethyl)-1,2,3,4-tetramethoxy-6,7,8,9-tetrahydro-5H-benzo[a]cycloheptene (1.50 g), benzimidazole (443 mg), and sodium carbonate (760 mg) in DMF (15 ml) was stirred at 70° C. for 8 hr. The reaction mixture was diluted with water and extracted with combined solution of ethyl acetate and THF. The organic layer was washed with water and saturated aqueous sodium chloride and dried. The solvent was removed in vacuo and the residue was diluted with diethylether and the resultant crystals were removed by filtration. The filtrate was concentrate in vacuo. The residue was purified by silica gel column chromatography (hexane to hexane:ethyl acetate=1:2) and then with recrystallization from hexane-ethyl acetate to obtain the entitled compound (480 mg).

후처리

  1. extractionextracted with combined solution of ethyl acetate and THF
  2. washThe organic layer was washed with water and saturated aqueous sodium chloride
  3. customdried
  4. customThe solvent was removed in vacuo
  5. additionthe residue was diluted with diethylether
  6. customthe resultant crystals were removed by filtration
  7. concentrationThe filtrate was concentrate in vacuo
  8. customThe residue was purified by silica gel column chromatography (hexane to hexane:ethyl acetate=1:2)
  9. customwith recrystallization from hexane-ethyl acetate

출처 및 근거

ORD 기록
ord-ad73347caa454111b59c1ad69d1b0a9c
출처 데이터셋
uspto-grants-2001_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06326369B1

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