Dimethylformamide → 6-cyano-1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid methyl ester

HRID 2382969노트

반응식

HRID 2382969 반응식
[CH3:1][O:2][C:3]([C:5]1[C:6]2[CH:7]=[N:8][N:9]([C:15]3[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=3)[C:10]=2[CH:11]=[C:12](Br)[CH:13]=1)=[O:4].[CH3:22][N:23](C=O)C>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].[C-]#N.[Zn+2].[C-]#N.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.[Fe+2].[Zn]>[CH3:1][O:2][C:3]([C:5]1[C:6]2[CH:7]=[N:8][N:9]([C:15]3[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=3)[C:10]=2[CH:11]=[C:12]([C:22]#[N:23])[CH:13]=1)=[O:4]

참가 물질

7

반응물 2

HCID 6228DimethylformamideHCID 581387736-bromo-1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid methyl ester

생성물 1

HCID 581388956-cyano-1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid methyl ester

시약·촉매·용매 4

HCID 11186Zinc cyanide (Zn(CN)2)촉매HCID 23994Zinc촉매HCID 635956Ferrocene-1,1'-bis-(diphenylphosphine)촉매HCID 9811564Bis(dibenzylideneacetone)palladium촉매

반응 조건

온도
120 °C

실험 절차

A sealed tube was charged with 6-bromo-1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid methyl ester (1.5 g, 4.3 mmol), Pd2(dba)3 (0.4 g, 0.4 mmol), zinc cyanide (0.6 g, 5 mmol), dppf (0.3 g, 0.4 mmol) and zinc powder (0.2 g, 3 mmol) and DMF (20 mL). The reaction solution was degassed with argon for 15 minutes and warmed at 120° C. for 3 hours. The reaction was cooled to room temperature, diluted with saturated aqueous ammonium chloride (10 mL) and ethyl acetate (50 mL). The organic layer was separated and washed with brine (10 mL), dried over sodium sulfate, filtered and concentrated. The residue was purified by silica gel chromatography eluting with a gradient of 0-20% ethyl acetate in hexanes to afford 6-cyano-1-(4-fluoro-phenyl)-1H-indazole-4-carboxylic acid methyl ester.

후처리

  1. customThe reaction solution was degassed with argon for 15 minutes
  2. temperatureThe reaction was cooled to room temperature
  3. additiondiluted with saturated aqueous ammonium chloride (10 mL) and ethyl acetate (50 mL)
  4. customThe organic layer was separated
  5. washwashed with brine (10 mL)
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customThe residue was purified by silica gel chromatography
  10. washeluting with a gradient of 0-20% ethyl acetate in hexanes

출처 및 근거

ORD 기록
ord-b2173039169544e09a02a95572f2316f
출처 데이터셋
uspto-grants-2012_09
특허 번호
US08263597B2

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