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Imidazole → 2-(1-((tert-Butyldimethylsilyl)oxy)-2-methylpropan-2-yl)-6-fluoro-5-nitro-1H-indole

HRID 468522
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HRID 468522 반응식
[F:1][C:2]1[CH:10]=[C:9]2[C:5]([CH:6]=[C:7]([C:11]([CH3:15])([CH3:14])[CH2:12][OH:13])[NH:8]2)=[CH:4][C:3]=1[N+:16]([O-:18])=[O:17].[CH3:19][C:20]([Si:23](Cl)([CH3:25])[CH3:24])([CH3:22])[CH3:21].N1C=CN=C1>C(Cl)Cl>[Si:23]([O:13][CH2:12][C:11]([C:7]1[NH:8][C:9]2[C:5]([CH:6]=1)=[CH:4][C:3]([N+:16]([O-:18])=[O:17])=[C:2]([F:1])[CH:10]=2)([CH3:15])[CH3:14])([C:20]([CH3:22])([CH3:21])[CH3:19])([CH3:25])[CH3:24]
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참가 물질

5

반응물 3

HCID 795ImidazoleHCID 28928tert-Butyldimethylsilyl chlorideHCID 591293832-(6-fluoro-5-nitro-1H-indol-2-yl)-2-methylpropan-1-ol

생성물 1

HCID 591292962-(1-((tert-Butyldimethylsilyl)oxy)-2-methylpropan-2-yl)-6-fluoro-5-nitro-1H-indole수율 38%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

To a stirred solution of 2-(6-fluoro-5-nitro-1H-indol-2-yl)-2-methylpropan-1-ol (10.0 g) in CH2Cl2 was added TBSCl (8.9 g), imidazole (8.1 g, 0.12 mol) at room temperature. The mixture was stirred overnight. The solvent was evaporated in vacuo and the residue was purified by chromatography on silica gel (10% EtOAc in petroleum ether) to give 2-(1-(tert-butyldimethylsilyloxy)-2-methylpropan-2-yl)-6-fluoro-5-nitro-1H-indole (5.3 g, 38%). 1H NMR (300 MHz, CDCl3) 9.51 (s, 1H), 8.31 (d, J=7.5 Hz, 1H), 7.02 (d, J=11.7 Hz, 1H), 6.32 (s, 1H), 3.63 (s, 2H), 1.35 (s, 6H), 0.99 (s, 9H), 0.11 (s, 6H).

후처리

  1. customThe solvent was evaporated in vacuo
  2. customthe residue was purified by chromatography on silica gel (10% EtOAc in petroleum ether)

출처 및 근거

ORD 기록
ord-9a0b1d57a94a4676926ef80a8a489537
출처 데이터셋
uspto-grants-2014_01
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08623905B2

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