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Cesium carbonate → methyl 2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine-9-carboxylate

HRID 886186
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 886186
I[C:2]1[N:3]=[C:4]2[C:10]3[CH:11]=[CH:12][C:13]([C:15]([O:17][CH3:18])=[O:16])=[CH:14][C:9]=3[O:8][CH2:7][CH2:6][N:5]2[CH:19]=1.[CH:20]([N:23]1[CH:27]=[N:26][CH:25]=[N:24]1)([CH3:22])[CH3:21].C(=O)([O-])[O-].[Cs+].[Cs+].[OH-].[NH4+].O>[Cu]I.CC([O-])=O.CC([O-])=O.[Pd+2].CCOC(C)=O.CN(C=O)C>[CH:20]([N:23]1[C:27]([C:2]2[N:3]=[C:4]3[C:10]4[CH:11]=[CH:12][C:13]([C:15]([O:17][CH3:18])=[O:16])=[CH:14][C:9]=4[O:8][CH2:7][CH2:6][N:5]3[CH:19]=2)=[N:26][CH:25]=[N:24]1)([CH3:22])[CH3:21]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

9

Edukt 4

HCID 10796Cesium carbonateHCID 127624431-(propan-2-yl)-1H-1,2,4-triazoleHCID 58204516Methyl 2-iodo-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepine-9-carboxylateHCID 86589665Water ammonium hydroxide

Produkt 1

HCID 58204510methyl 2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine-9-carboxylate
Ausbeute 28,3 %

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 167845palladium(II) acetateKatalysatorHCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

To methyl 2-iodo-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine-9-carboxylate (1.0 g, 2.7 mmol), 1-isopropyl-1H-1,2,4-triazole (0.30 g, 2.7 mmol), CuI (1.5 g, 8.1 mmol), Pd(OAc)2(0.061 g, 0.27 mmol), and cesium carbonate (2.2 g, 6.8 mmol) was added DMF (26 mL). The reaction mixture was allowed to stir and heat at 100° C. for 24 hours in a sealed vial. The reaction mixture was cooled to room temperature and poured into a mixture of ammonium hydroxide/water (1:2) and EtOAc and filtered through a pad of silica. The layers were separated and the aqueous portion was extracted with EtOAc. The combined organic extracts were washed with ammonium hydroxide (1:2), water, brine, dried over MgSO4, and concentrated under reduced pressure. The crude material was purified by column chromatography on silica gel eluting with EtOAc to provide 184 (0.270 g, 28%). 1H NMR (400 MHz, DMSO) δ 8.54 (d, J=8.4, 1H), 7.97 (d, J=35.2, 2H), 7.70 (dd, J=8.4, 1.7, 1H), 7.57 (d, J=1.7, 1H), 5.99-5.70 (m, 1H), 4.57 (q, J=5.9, 4H), 3.87 (s, 3H), 1.49 (d, J=6.6, 6H). MS (ESI(+)): m/z 354.1 (M+H).

Aufarbeitung

  1. temperatureThe reaction mixture was cooled to room temperature
  2. filtrationfiltered through a pad of silica
  3. customThe layers were separated
  4. extractionthe aqueous portion was extracted with EtOAc
  5. washThe combined organic extracts were washed with ammonium hydroxide (1:2), water, brine
  6. dry with materialdried over MgSO4
  7. concentrationconcentrated under reduced pressure
  8. customThe crude material was purified by column chromatography on silica gel eluting with EtOAc

Quellen und Nachweise

ORD-Eintrag
ord-e076533a7a904adc90294353ee47a52a
Quelldatensatz
uspto-grants-2012_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08242104B2

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