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Sodium hydride → 2-(cyclopropylmethyl)-8-(1-isopropylpiperidin-4-yloxy)-3,4-dihydropyrazino[1,2-a]indol-1(2H)-one

HRID 2105356
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2105356
[CH:1]([N:4]1[CH2:9][CH2:8][CH:7]([O:10][C:11]2[CH:19]=[CH:18][C:17]3[N:16]4[CH2:20][CH2:21][NH:22][C:23](=[O:24])[C:15]4=[CH:14][C:13]=3[CH:12]=2)[CH2:6][CH2:5]1)([CH3:3])[CH3:2].[H-].[Na+].Br[CH2:28][CH:29]1[CH2:31][CH2:30]1.[Cl-].[NH4+]>CN(C)C=O>[CH:29]1([CH2:28][N:22]2[CH2:21][CH2:20][N:16]3[C:17]4[CH:18]=[CH:19][C:11]([O:10][CH:7]5[CH2:8][CH2:9][N:4]([CH:1]([CH3:3])[CH3:2])[CH2:5][CH2:6]5)=[CH:12][C:13]=4[CH:14]=[C:15]3[C:23]2=[O:24])[CH2:31][CH2:30]1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 24758Sodium hydrideHCID 25517Ammonium ChlorideHCID 81503BromomethylcyclopropaneHCID 166795188-(1-isopropylpiperidin-4-yloxy)-3,4-dihydropyrazino[1,2-a]indol-1(2H)-one

Produkt 1

HCID 529412692-(cyclopropylmethyl)-8-(1-isopropylpiperidin-4-yloxy)-3,4-dihydropyrazino[1,2-a]indol-1(2H)-oneAusbeute 38 %

Reagenzien, Katalysatoren, Lösungsmittel

1
HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To the solution of 0.15 g (0.46 mmol) 8-(1-isopropyl-piperidin-4-yloxy)-3,4-dihydro-2H-pyrazino[1,2-a]indol-1-one (example 1) in 3 mL N,N-dimethylformamide, 24 mg (0.55 mmol, 55% dispersion in mineral oil) sodium hydride was added. After 30 min., 1-(bromomethyl)cyclopropane was added and the mixture was stirred until completion of the reaction as indicated by TLC (2 h). The reaction mixture was poured on 10% aqueous ammonium chloride solution and was extracted three times with ethyl acetate. The organic layers were washed with water and brine, dried over magnesium sulfate, filtered and evaporated. The residue was purified by flash column chromatography on silica gel with dichloromethane:methanol:ammonia (9:1:0.1 v/v) to give the desired compound as a white solid (38%).

Aufarbeitung

  1. customas indicated by TLC (2 h)
  2. extractionwas extracted three times with ethyl acetate
  3. washThe organic layers were washed with water and brine
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue was purified by flash column chromatography on silica gel with dichloromethane:methanol:ammonia (9:1:0.1 v/v)

Quellen und Nachweise

ORD-Eintrag
ord-ffa135858d7242a8a6dbe95c70e15d66
Quelldatensatz
uspto-grants-2009_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07579351B2

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