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8-Hydroxyquinoline → 8-bromo-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)quinoline

HRID 1403098
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HRID 1403098 반응식
[Br:1][C:2]1[CH:3]=[CH:4][CH:5]=[C:6]2[C:11]=1[N:10]=[CH:9][CH:8]=[C:7]2Cl.Cl.[NH:14]1[CH:18]=[C:17]([C:19]2[CH:20]=[N:21][N:22]([CH3:24])[CH:23]=2)[N:16]=[CH:15]1.N1C2C(=CC=CC=2O)C=CC=1.C(=O)([O-])[O-].[Cs+].[Cs+]>CS(C)=O.[Cu-]=O>[Br:1][C:2]1[CH:3]=[CH:4][CH:5]=[C:6]2[C:11]=1[N:10]=[CH:9][CH:8]=[C:7]2[N:14]1[CH:18]=[C:17]([C:19]2[CH:20]=[N:21][N:22]([CH3:24])[CH:23]=2)[N:16]=[CH:15]1
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참가 물질

7

반응물 4

HCID 19238-HydroxyquinolineHCID 10796Cesium carbonateHCID 124036918-Bromo-4-chloroquinolineHCID 178478913HCID 178478913, 화합물

생성물 1

HCID 867011518-bromo-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)quinoline수율 100%

시약·촉매·용매 2

HCID 178419072
HCID 178419072, 화합물
촉매
HCID 679Dimethyl Sulfoxide용매

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온도
110 °C

실험 절차

A suspension of 2-bromoaniline (20.9 g) and 5-(methoxymethylene)-2,2-dimethyl-1,3-dioxane-4,6-dione (22.6 g) in 2-propanol (240 ml) was heated to reflux for 1 hour. The reaction solution was cooled to 0° C., and the deposit was then filtrated to obtain a pale yellow solid (35.0 g). A suspension of the obtained pale yellow solid (10.0 g) in Dowtherm (100 ml) was heated at 210° C. for 1 hour. After cooling, hexane (100 ml) was added to the reaction solution, and the deposit was filtrated to obtain 8-bromoquinolin-4(1H)-one (6.3 g). Thionyl chloride (5.9 ml) was added to 8-bromoquinolin-4(1H)-one (9.0 g), and the mixture was heated to reflux for 2 hours. The solvent was distilled off under reduced pressure, and chloroform was added to the residue. The reaction solution was neutralized with an aqueous sodium hydroxide solution with cooling in an ice bath and partitioned into organic and aqueous layers. The organic layer was washed with brine. The organic layer thus washed was dried over anhydrous sodium sulfate. Then, the solvent was distilled off, and the residue was purified by neutral silica gel column chromatography (chloroform/methanol) to obtain 8-bromo-4-chloroquinoline (8.3 g) as a white solid. The obtained 8-bromo-4-chloroquinoline (0.050 g), 4-(1H-imidazol-4-yl)-1-methyl-1H-pyrazole hydrochloride (0.045 g), 8-quinolinol (0.0045 g), copper(I) oxide (0.0015 g), PEG (Mn=3400) (0.010 g), and cesium carbonate (0.17 g) were suspended in DMSO (2.1 ml). The suspension was purged with nitrogen, then sealed in the tube, and stirred at 110° C. for 2 hours. After cooling, the reaction solution was partitioned between ethyl acetate and water. The organic layer was washed with brine and then dried over anhydrous sodium sulfate to obtain 8-bromo-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)quinoline as a pale yellow solid (0.073 g). Compound (119) was obtained as a pale yellow solid (yield based on 6 steps: 17%) according to Example 1(5) using the obtained 8-bromo-4-(4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazol-1-yl)quinoline instead of compound (1d).

후처리

  1. customThe suspension was purged with nitrogen
  2. customsealed in the tube
  3. temperatureAfter cooling
  4. customthe reaction solution was partitioned between ethyl acetate and water
  5. washThe organic layer was washed with brine
  6. dry with materialdried over anhydrous sodium sulfate

출처 및 근거

ORD 기록
ord-680a810477f5496d8aec8b115e0ce6e5
출처 데이터셋
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08912181B2

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