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Sodium hydride → Tert-butyl 3-[(2'-oxo-1'-{[5-(trifluoromethyl)furan-2-yl]methyl}-1',2'-dihydrospiro[1-benzofuran-3,3'-indol]-6-yl)oxy]pyrrolidine-1-carboxylate

HRID 1407829
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1407829
[O:1]=[C:2]1[C:10]2([C:14]3[CH:15]=[CH:16][C:17]([O:19][CH:20]4[CH2:24][CH2:23][N:22]([C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[CH2:21]4)=[CH:18][C:13]=3[O:12][CH2:11]2)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[NH:3]1.[H-].[Na+].Br[CH2:35][C:36]1[O:37][C:38]([C:41]([F:44])([F:43])[F:42])=[CH:39][CH:40]=1>CN(C)C=O>[O:1]=[C:2]1[C:10]2([C:14]3[CH:15]=[CH:16][C:17]([O:19][CH:20]4[CH2:24][CH2:23][N:22]([C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[CH2:21]4)=[CH:18][C:13]=3[O:12][CH2:11]2)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]1[CH2:35][C:36]1[O:37][C:38]([C:41]([F:44])([F:43])[F:42])=[CH:39][CH:40]=1
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Komponenten

5

Edukt 3

HCID 24758Sodium hydrideHCID 27946052-(Bromomethyl)-5-(trifluoromethyl)furanHCID 67356302HCID 67356302, Verbindung

Produkt 1

HCID 59352425Tert-butyl 3-[(2'-oxo-1'-{[5-(trifluoromethyl)furan-2-yl]methyl}-1',2'-dihydrospiro[1-benzofuran-3,3'-indol]-6-yl)oxy]pyrrolidine-1-carboxylateAusbeute 55 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228
Dimethylformamide
Lösungsmittel

Versuchsvorschrift

To a stirred solution of tert-butyl 3-[(2′-oxo-1,2′-dihydrospiro[1-benzofuran-3,3-indol]-6-yl)oxy]pyrrolidine-1-carboxylate (0.19 g, 0.45 mol) in N,N-dimethyl formamide (10 mL) was added sodium hydride (0.02 g, 0.54 mmol) slowly at 0° C. After 30 min, 2-(bromomethyl)-5-(trifluoromethyl)furan (0.12 g, 0.54 mmol) was added. The mixture was stirred at ambient temperature for 16 h, and then quenched with saturated ammonium chloride (10 mL). The mixture was extracted with ethyl acetate (3×20 mL). The combined organic solution was dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated in vacuo. The residue was subjected to column chromatography (ethyl acetate/hexanes, 1/2) to afford tert-butyl 3-[(2′-oxo-1′-{[5-(trifluoromethyl)furan-2-yl]methyl}-1′,2′-dihydrospiro[1-benzofuran-3,3-indol]-6-yl)oxy]pyrrolidine-1-carboxylate (0.14 g, 55%) as a colorless solid: 1H NMR (300 MHz, CDCl3) δ7.29 (t, J=7.7 Hz, 1H), 7.16 (d, J=7.4 Hz, 1H), 7.06 (t, J=7.5 Hz, 1H), 6.97 (d, J=7.8 Hz, 1H), 6.76-6.70 (m, 1H), 6.54 (d, J=8.2 Hz, 1H), 6.47 (s, 1H), 6.40-6.35 (m, 1H), 6.30 (d, J=8.2 Hz, 1H), 5.06 (d, J=16.2 Hz, 1H), 4.95 (d, J=9.0 Hz, 1H), 4.86 (d, J=16.2 Hz, 1H), 4.80 (br s, 1H), 4.69 (d, J=9.0 Hz, 1H), 3.64-3.37 (m, 4H), 2.22-1.96 (m, 2H), 1.45 (s, 9H); MS (ES+) m/z 593.2 (M+23).

Aufarbeitung

  1. customquenched with saturated ammonium chloride (10 mL)
  2. extractionThe mixture was extracted with ethyl acetate (3×20 mL)
  3. dry with materialThe combined organic solution was dried over anhydrous sodium sulfate
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-453e0a4f58e9452fab5a98dfcfb4f59d
Quelldatensatz
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08916580B2

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