2,2'-Bipyridine → 8-Chloro-1-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-5-(1-ethylpropyl)-2,3-dihydro-1H-imidazo[1,2-a]benzimidazole

HRID 1628787노트

반응식

HRID 1628787 반응식
[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[NH:11][CH2:12][CH2:13][N:7]3[C:6]=2[C:5]([CH:14]([CH2:17][CH3:18])[CH2:15][CH3:16])=[CH:4][CH:3]=1.Br[C:20]1[C:25]([Cl:26])=[CH:24][C:23]([C:27]([F:30])([F:29])[F:28])=[CH:22][N:21]=1.N1C=CC=CC=1C1C=CC=CN=1.C(=O)([O-])[O-].[Cs+].[Cs+]>CN1CCCC1=O.C(OCC)(=O)C.[Cu]I>[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:20]4[C:25]([Cl:26])=[CH:24][C:23]([C:27]([F:30])([F:28])[F:29])=[CH:22][N:21]=4)[CH2:12][CH2:13][N:7]3[C:6]=2[C:5]([CH:14]([CH2:17][CH3:18])[CH2:15][CH3:16])=[CH:4][CH:3]=1

참가 물질

8

반응물 4

HCID 14742,2'-BipyridineHCID 10796Cesium carbonateHCID 27362372-Bromo-3-chloro-5-(trifluoromethyl)pyridineHCID 1360477328-Chloro-5-(1-ethylpropyl)-2,3-dihydro-1H-imidazo[1,2-a]benzimidazole

생성물 1

HCID 577859268-Chloro-1-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-5-(1-ethylpropyl)-2,3-dihydro-1H-imidazo[1,2-a]benzimidazole

시약·촉매·용매 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 8857Ethyl Acetate용매HCID 13387N-methyl-2-pyrrolidone용매

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온도
150 °C

실험 절차

A mixture of 8-chloro-5-(1-ethylpropyl)-2,3-dihydro-1H-imidazo[1,2-a]benzimidazole (28.6 mg, 0.108 mmol), 2-bromo-3-chloro-5-(trifluoromethyl)pyridine (56.3 mg, 0.217 mmol), copper (I) iodide (20.6 mg, 0.108 mmol), 2,2′-bipyridyl (33.9 mg, 0.217 mmol) and cesium carbonate (70.7 mg, 0.217 mmol) in 1-methyl-2-pyrrolidinone (1.0 mL) was stirred at 150° C. for 4 hrs. After cooling, the mixture was diluted with ethyl acetate, the precipitate was filtered through a pad of celite. The filtrate was extracted with ethyl acetate (×3). The combined organic layer was washed with 1N hydrochloric acid (×1) and brine (×1), dried over anhydrous magnesium sulfate and concentrated in vacuo. The residue was purified by silica gel column chromatography eluting with a 0-15% ethyl acetate/n-hexane gradient mixture to give the title compound as a yellow amorphous (14.2 mg, 0.0320 mmol, 30%).

후처리

  1. temperatureAfter cooling
  2. filtrationthe precipitate was filtered through a pad of celite
  3. extractionThe filtrate was extracted with ethyl acetate (×3)
  4. washThe combined organic layer was washed with 1N hydrochloric acid (×1) and brine (×1)
  5. dry with materialdried over anhydrous magnesium sulfate
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by silica gel column chromatography
  8. washeluting with a 0-15% ethyl acetate/n-hexane gradient mixture

출처 및 근거

ORD 기록
ord-489ffb785b304c7aac7fd830eb0835c5
출처 데이터셋
uspto-grants-2014_07
특허 번호
US08785460B2

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