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5-bromo-1-(4-fluorophenyl)-1H-indazole → 1-allyl-4-{2,2,2-trifluoro-1-[1-(4-fluorophenyl)-1H-indazol-5-yl]-1-hydroxyethyl}-1H-pyrrole-2-carboxylic acid ethyl ester

HRID 244436
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반응식

HRID 244436 반응식
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[N:7]([C:11]1[CH:16]=[CH:15][C:14]([F:17])=[CH:13][CH:12]=1)[N:6]=[CH:5]2.[Li]CCCC.[CH2:23]([O:25][C:26]([C:28]1[N:29]([CH2:39][CH:40]=[CH2:41])[CH:30]=[C:31]([C:33](=[O:38])[C:34]([F:37])([F:36])[F:35])[CH:32]=1)=[O:27])[CH3:24]>C1COCC1>[CH2:23]([O:25][C:26]([C:28]1[N:29]([CH2:39][CH:40]=[CH2:41])[CH:30]=[C:31]([C:33]([C:2]2[CH:3]=[C:4]3[C:8](=[CH:9][CH:10]=2)[N:7]([C:11]2[CH:16]=[CH:15][C:14]([F:17])=[CH:13][CH:12]=2)[N:6]=[CH:5]3)([OH:38])[C:34]([F:36])([F:35])[F:37])[CH:32]=1)=[O:27])[CH3:24]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 468307945-bromo-1-(4-fluorophenyl)-1H-indazoleHCID 594372701-allyl-4-(2,2,2-trifluoroacetyl)-1H-pyrrole-2-carboxylic acid ethyl esterHCID 178418339Butyllithium

생성물 1

HCID 249590981-allyl-4-{2,2,2-trifluoro-1-[1-(4-fluorophenyl)-1H-indazol-5-yl]-1-hydroxyethyl}-1H-pyrrole-2-carboxylic acid ethyl ester수율 32%

시약·촉매·용매 1

HCID 8028
Tetrahydrofuran
용매
2회

실험 절차

To a chilled (−78° C.) solution of 5-bromo-1-(4-fluorophenyl)-1H-indazole (2.0 g, 6.8 mmol, 1.2 equiv.) in 20 mL of THF was added n-BuLi (2.5 mL, 6.2 mmol, 1.1 equiv.) followed by a chilled (−78° C.) solution of 1-allyl-4-(2,2,2-trifluoroacetyl)-1H-pyrrole-2-carboxylic acid ethyl ester (1.6 g, 5.7 mmol, 1.0 equiv.) in 3 mL of THF in one portion. After 30 minutes, the mixture was quenched with water, warmed to room temperature, diluted with brine, and extracted with EtOAc. The combined organics were dried, filtered, and concentrated in vacuo. The residue was purified by flash chromatography (5-30% EtOAc-hexanes) to provide 890 mg (32%) of the title compound as a pale orange solid. MS m/z 488.30 (MH+).

후처리

  1. customthe mixture was quenched with water
  2. additiondiluted with brine
  3. extractionextracted with EtOAc
  4. customThe combined organics were dried
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by flash chromatography (5-30% EtOAc-hexanes)

출처 및 근거

ORD 기록
ord-d1584bbe2e8e471aab5d2d64c44a349a
출처 데이터셋
uspto-grants-2014_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08658637B2

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