Cesium carbonate → HCID 178424207, Verbindung

HRID 2383484Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2383484
Br[C:2]1[C:14]2[C:13]3[CH2:12][CH2:11][N:10]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[CH2:9][C:8]=3[CH:7]=[N:6][C:5]=2[NH:4][N:3]=1.[C:22]1([CH3:31])[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=1B(O)O.C(=O)([O-])[O-].[Cs+].[Cs+]>C1(C)C=CC=CC=1.C(O)C>[C:22]1([CH3:31])[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=1[C:2]1[C:14]2[C:13]3[CH2:12][CH2:11][N:10]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[CH2:9][C:8]=3[CH:7]=[N:6][C:5]=2[NH:4][N:3]=1

Komponenten

6

Edukt 3

HCID 10796Cesium carbonateHCID 27332672-Methylphenyl boronic acidHCID 178451611HCID 178451611, Verbindung

Produkt 1

HCID 178424207HCID 178424207, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 702EthanolLösungsmittelHCID 1140TolueneLösungsmittel

Reaktionsbedingungen

Temperatur
110 °C

Versuchsvorschrift

To 77 mM solution of tert-butyl 1-bromo-8,9-dihydro-3H-pyrazolo[3,4-c][2,7]naphthyridine-7(6H)-carboxylate (1.3 mL) in toluene and absolute ethanol (2:1) was added o-tolylboronic acid (0.0136 g, 0.1 mmol) followed by 1M solution of cesium carbonate (0.6 mL) and 1,1-bis(Di-tBuppf)PdCl2 (0.005 g). The reaction mixture was shaken at 110° C. for 24 hours. On completion of the reaction, the reaction mixture was extracted with EtOAc (2×2 mL). The organic layers were combined and concentrated under reduced pressure to give the desired crude product, tert-butyl 1-o-tolyl-8,9-dihydro-3H-pyrazolo[3,4-c][2,7]naphthyridine-7(6H)-carboxylate as an brown solid, which was used in the next step without any further purification.

Aufarbeitung

  1. customOn completion of the reaction
  2. extractionthe reaction mixture was extracted with EtOAc (2×2 mL)
  3. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-ac4ccd7175724cb48140eafab6f67ee8
Quelldatensatz
uspto-grants-2012_09
Patentnummer
US08263610B2

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