4-Fluoroiodobenzene → 6-bromo-1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid methyl ester

HRID 1677705노트

반응식

HRID 1677705 반응식
[CH3:1][O:2][C:3]([C:5]1[C:6]2[CH:7]=[N:8][NH:9][C:10]=2[CH:11]=[C:12]([Br:14])[CH:13]=1)=[O:4].C(=O)([O-])[O-].[K+].[K+].[F:21][C:22]1[CH:27]=[CH:26][C:25](I)=[CH:24][CH:23]=1.CN[C@@H]1CCCC[C@H]1NC>O.C(OCC)(=O)C.[Cu]I.CN(C=O)C>[CH3:1][O:2][C:3]([C:5]1[C:6]2[CH:7]=[N:8][N:9]([C:25]3[CH:26]=[CH:27][C:22]([F:21])=[CH:23][CH:24]=3)[C:10]=2[CH:11]=[C:12]([Br:14])[CH:13]=1)=[O:4]

참가 물질

9

반응물 4

HCID 96054-FluoroiodobenzeneHCID 11430Potassium CarbonateHCID 2733821trans-N,N'-dimethyl-1,2-cyclohexanediamineHCID 24728062methyl 6-bromo-1H-indazole-4-carboxylate

생성물 1

HCID 581387736-bromo-1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid methyl ester

시약·촉매·용매 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 962Water용매HCID 6228Dimethylformamide용매HCID 8857Ethyl Acetate용매

반응 조건

온도
120 °C

실험 절차

A mixture of 6-bromo-4-indazolecarboxylic acid methyl ester (2.0 g, 7.8 mmol), copper(I) iodide (0.4 g, 0.2 mmol), potassium carbonate (1.2 g, 8.5 mmol) and 4-fluoroiodobenzene (1.8 g, 8.5 mmol) was charged in a sealed tube at room temperature. The tube was evacuated and back-filled with argon, and DMF (10 mL) and rac-trans-N,N′-dimethylcyclohexane-1,2-diamine (0.20 g, 1.4 mmol) was added. The solution was stirred at 120° C. for 3 hours, cooled to room temperature, and diluted with water (30 mL) and ethyl acetate (50 mL). The organic layer was separated, washed with brine (10 mL) and dried over sodium sulfate. The solvent was removed in vacuo. The residue was purified by silica gel chromatography eluting with a gradient of 0-30% ethyl acetate in hexanes to afford 6-bromo-1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid methyl ester.

후처리

  1. additionwas charged in a sealed tube at room temperature
  2. customThe tube was evacuated
  3. additionwas added
  4. temperaturecooled to room temperature
  5. customThe organic layer was separated
  6. washwashed with brine (10 mL)
  7. dry with materialdried over sodium sulfate
  8. customThe solvent was removed in vacuo
  9. customThe residue was purified by silica gel chromatography
  10. washeluting with a gradient of 0-30% ethyl acetate in hexanes

출처 및 근거

ORD 기록
ord-8ca364cebcb24a77a6a290ce4b5477df
출처 데이터셋
uspto-grants-2011_08
특허 번호
US08008327B2

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