Potassium Carbonate → HCID 86696367, Verbindung

HRID 870667Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 870667
Br[C:2]1[N:6]2[N:7]=[C:8]([NH:11][CH2:12][CH2:13][CH2:14][CH3:15])[CH:9]=[CH:10][C:5]2=[N:4][CH:3]=1.[CH3:16][O:17][C:18]([C:20]1[CH:25]=[CH:24][C:23](B(O)O)=[CH:22][CH:21]=1)=[O:19].C(=O)([O-])[O-].[K+].[K+]>C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].C(#N)C.O>[CH2:12]([NH:11][C:8]1[CH:9]=[CH:10][C:5]2[N:6]([C:2]([C:23]3[CH:24]=[CH:25][C:20]([C:18]([O:17][CH3:16])=[O:19])=[CH:21][CH:22]=3)=[CH:3][N:4]=2)[N:7]=1)[CH2:13][CH2:14][CH3:15]

Komponenten

6

Edukt 3

HCID 11430Potassium CarbonateHCID 27343694-Methoxycarbonylphenylboronic acidHCID 866963223-Bromo-6-(butylamino)imidazo[1,2-b]pyridazine

Produkt 1

HCID 86696367HCID 86696367, VerbindungAusbeute 67,3 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)KatalysatorHCID 18373917Acetonitrile--water (1/1)Lösungsmittel

Reaktionsbedingungen

Temperatur
145 °C

Versuchsvorschrift

To a mixture of 3-bromo-N-butylimidazo[1,2-b]pyridazin-6-amine (386 mg, 1.43 mmol), (4-(methoxycarbonyl)phenyl)boronic acid (310 mg, 1.72 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (50 mg, 0.07 mmol) and potassium carbonate (296 mg, 2.15 mmol) was added 3:1 acetonitrile/water (5 mL). The resulting mixture was heated at 145° C. (microwave) for 800 s. The reaction was then filtered and concentrated. The residue was dissolved in methanol, and then filtered again. The filtration was finally purified by column chromatography on silica gel (50% ethyl acetate in hexane) to afford methyl 4-(6-(butylamino)imidazo[1,2-b]pyridazin-3-yl)benzoate (312 mg, 67% yield) as a yellow solid: 1H NMR (CHLOROFORM-d) δ: 8.22-8.34 (m, 2H), 8.09-8.20 (m, 2H), 7.93 (s, 1H), 7.71 (d, J=9.6 Hz, 1H), 6.51 (d, J=9.6 Hz, 1H), 3.97 (s, 3H), 3.41-3.53 (m, 2H), 1.72 (t, J=7.2 Hz, 2H), 1.50 (dd, J=15.0, 7.5 Hz, 2H), 1.02 (t, J=7.5 Hz, 3H); LRMS (ESI) m/e 325.2 [(M+H)+, calcd for C18H21N4O2 325.2].

Aufarbeitung

  1. filtrationThe reaction was then filtered
  2. concentrationconcentrated
  3. dissolutionThe residue was dissolved in methanol
  4. filtrationfiltered again
  5. filtrationThe filtration
  6. customwas finally purified by column chromatography on silica gel (50% ethyl acetate in hexane)

Quellen und Nachweise

ORD-Eintrag
ord-ee6592bf9bec41a3a4792d43a46b5901
Quelldatensatz
uspto-grants-2015_03
Patentnummer
US08969565B2

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