Potassium Carbonate → HCID 89677097, Verbindung

HRID 2278253Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2278253
Br[C:2]1[N:7]=[C:6]([CH3:8])[C:5]([CH2:9][N:10]2[CH2:15][CH2:14][N:13]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:12][CH2:11]2)=[CH:4][CH:3]=1.[CH3:23][C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=1B(O)O.C(=O)([O-])[O-].[K+].[K+].O1CCOCC1>O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:8][C:6]1[C:5]([CH2:9][N:10]2[CH2:15][CH2:14][N:13]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:12][CH2:11]2)=[CH:4][CH:3]=[C:2]([C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][C:24]=2[CH3:23])[N:7]=1

Komponenten

7

Edukt 4

HCID 11430Potassium CarbonateHCID 312751,4-DioxaneHCID 27332672-Methylphenyl boronic acidHCID 89677012HCID 89677012, Verbindung

Produkt 1

HCID 89677097HCID 89677097, VerbindungAusbeute 97,1 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 962WaterLösungsmittel2×

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

A 50 mL round-bottom flask was purged with and maintained under an inert atmosphere of nitrogen then charged with tert-butyl 4-[(6-bromo-2-methylpyridin-3-yl)methyl]piperazine-1-carboxylate (800 mg, 2.16 mmol, 1.00 equiv), (2-methylphenyl)boronic acid (590 mg, 4.34 mmol, 2.00 equiv), tetrakis(triphenylphosphine)palladium (250 mg, 0.220 mmol, 0.10 equiv), potassium carbonate (898 mg, 6.50 mmol, 3.00 equiv), dioxane (12 mL), and water (2 mL). The resulting solution was stirred overnight at 80° C. and then diluted with water (10 mL) and extracted with dichloromethane (3×10 mL). The organic layers were combined, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was chromatographed on a silica gel column with ethyl acetate/petroleum ether (22/78) to provide 800 mg (97% yield) of tert-butyl 4-[[2-methyl-6-(2-methylphenyl)pyridin-3-yl]methyl]piperazine-1-carboxylate as a yellow oil. LCMS (ESI, m/z): 382 [M+H]+.

Aufarbeitung

  1. customA 50 mL round-bottom flask was purged with and
  2. temperaturemaintained under an inert atmosphere of nitrogen
  3. extractionextracted with dichloromethane (3×10 mL)
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was chromatographed on a silica gel column with ethyl acetate/petroleum ether (22/78)

Quellen und Nachweise

ORD-Eintrag
ord-63846fa742754e8793a07677fe7f1aa9
Quelldatensatz
uspto-grants-2015_09
Patentnummer
US09133148B2

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