Cesium carbonate → 6-[2-(dimethylamino)ethoxy]-1'-[(2R)-tetrahydrofuran-2-ylmethyl]spiro[1-benzofuran-3,3'-indol]-2'(1'H)-one

HRID 422873

Reaktionsgleichung

Reaktionsgleichung von HRID 422873
[CH3:1][N:2]([CH3:24])[CH2:3][CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]2[C:12]3([CH2:22][O:23][C:8]=2[CH:7]=1)[C:20]1[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=1)[NH:14][C:13]3=[O:21].CC1C=CC(S(O[CH2:36][C@H:37]2[CH2:41][CH2:40][CH2:39][O:38]2)(=O)=O)=CC=1.C(=O)([O-])[O-].[Cs+].[Cs+]>CC(=O)CC>[CH3:1][N:2]([CH3:24])[CH2:3][CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]2[C:12]3([CH2:22][O:23][C:8]=2[CH:7]=1)[C:20]1[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=1)[N:14]([CH2:36][C@H:37]1[CH2:41][CH2:40][CH2:39][O:38]1)[C:13]3=[O:21]

Komponenten

5

Edukt 3

HCID 10796Cesium carbonateHCID 7033050(R)-(tetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonateHCID 452801616-[2-(dimethylamino)ethoxy]spiro[1-benzofuran-3,3'-indol]-2'(1'H)-one

Produkt 1

HCID 452802206-[2-(dimethylamino)ethoxy]-1'-[(2R)-tetrahydrofuran-2-ylmethyl]spiro[1-benzofuran-3,3'-indol]-2'(1'H)-oneAusbeute 76,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6569Methyl Ethyl KetoneLösungsmittel

Versuchsvorschrift

To a stirred solution of 6-[2-(dimethylamino)ethoxy]spiro[1-benzofuran-3,3′-indol]-2′(1′H)-one (0.21 g, 0.64 mmol) in 2-butanone (10 mL) was added (R)-(tetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate (0.20 g, 0.76 mmol) followed by cesium carbonate (0.63 g, 1.90 mmol) at 0° C. The mixture was stirred at ambient temperature for 16 h. The reaction mixture was filtered and the filtrate was concentrated in vacuo. The residue was subjected to column chromatography (ethyl acetate/methanol/ammonium hydroxide, 10/1/0.2) to give 6-[2-(dimethylamino)ethoxy]-1′-[(2R)-tetrahydrofuran-2-ylmethyl]spiro[1-benzofuran-3,3′-indol]-2′(1′H)-one (0.20 g, 76%): 1H NMR (300 MHz, CDCl3) δ 7.31-7.24 (m, 1H), 7.14-6.96 (m, 3H), 6.57 (d, J=8.3 Hz, 1H), 6.52 (d, J=2.2 Hz, 1H), 6.36 (dd, J=8.3, 2.2 Hz, 1H), 4.91 (d, J=9.0 Hz, 1H), 4.66 (d, J=9.0 Hz, 1H), 4.31-4.19 (m, 1H), 4.00 (t, J=5.8 Hz, 2H), 3.94-3.63 (m, 4H), 2.68 (t, J=5.8 Hz, 2H), 2.97 (s, 6H), 2.09-1.63 (m, 4H); 13C NMR (75 MHz, CDCl3) δ 178.1, 177.9, 162.0, 160.7, 142.9, 142.8, 132.5, 132.4, 128.7, 128.6, 123.7, 123.6, 123.5, 123.4, 123.2, 121.1, 121.0, 109.6, 109.4, 108.1, 97.2, 80.6, 80.5, 68.24, 68.2, 66.3, 58.2, 57.5, 45.9, 44.6, 44.5, 29.2, 28.9, 25.7, 25.5; MS (ES+) m/z 409.3 (M+1).

Aufarbeitung

  1. filtrationThe reaction mixture was filtered
  2. concentrationthe filtrate was concentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-4a540bd500c342bc81a6b30a89493bc1
Quelldatensatz
uspto-grants-2012_01
Patentnummer
US08101647B2

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