Cesium carbonate → 6-[4-(3,5-dimethyl-piperazin-1-yl)-phenyl]-3-ethyl-4-methoxy-1-phenyl-1H-pyrazolo[3,4-b]pyridine

HRID 68740

Reaktionsgleichung

Reaktionsgleichung von HRID 68740
Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:13](C)[C:12]3[N:15]([C:20]4[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=4)[N:16]=[C:17]([CH2:18][CH3:19])[C:11]=3[C:10](=[O:26])[CH:9]=2)=[CH:4][CH:3]=1.[CH3:27][CH:28]1[CH2:33][NH:32][CH2:31][CH:30]([CH3:34])[NH:29]1.[CH:35]1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1.C([O-])([O-])=O.[Cs+].[Cs+]>C1(C)C=CC=CC=1.CN(C=O)C.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].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.[Fe+2]>[CH3:34][CH:30]1[NH:29][CH:28]([CH3:27])[CH2:33][N:32]([C:2]2[CH:3]=[CH:4][C:5]([C:8]3[N:13]=[C:12]4[N:15]([C:20]5[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=5)[N:16]=[C:17]([CH2:18][CH3:19])[C:11]4=[C:10]([O:26][CH3:35])[CH:9]=3)=[CH:6][CH:7]=2)[CH2:31]1

Komponenten

8

Edukt 4

HCID 10796Cesium carbonateHCID 660562,6-DimethylpiperazineHCID 634876Binap, (A+-)-HCID 674488196-(4-bromophenyl)-3-ethyl-7-methyl-1-phenyl-1H-pyrazolo[3,4-b]pyridin-4(7H)-one

Produkt 1

HCID 584835716-[4-(3,5-dimethyl-piperazin-1-yl)-phenyl]-3-ethyl-4-methoxy-1-phenyl-1H-pyrazolo[3,4-b]pyridine

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 635956Ferrocene-1,1'-bis-(diphenylphosphine)KatalysatorHCID 9811564Bis(dibenzylideneacetone)palladiumKatalysatorHCID 21735183Dimethylformamide tolueneLösungsmittel

Reaktionsbedingungen

Temperatur
120 °C

Versuchsvorschrift

Into a 50-mL round-bottom flask purged and maintained with an inert atmosphere of nitrogen, was placed a solution of 6-(4-bromophenyl)-3-ethyl-7-methyl-1-phenyl-1H-pyrazolo[3,4-b]pyridin-4(7H)-one (100 mg, 0.24 mmol, 1.00 equiv) in toluene/DMF (2 ml/Id), 2,6-dimethylpiperazine (140 mg, 1.23 mmol, 5.01 equiv), BINAP (15.3 mg, 0.02 mmol, 0.10 equiv), Pd2(dba)3 (22.4 mg, 0.02 mmol, 0.10 equiv), Cs2CO3 (140 mg, 0.73 mmol, 2.96 equiv), dppf (9.18 mg). The resulting solution was stirred overnight at 120° C. in an oil bath. The resulting mixture was concentrated under vacuum. The residue was applied onto a silica gel column with dichloromethane/methanol (200:1-100:1) to yield 6-[4-(3,5-dimethyl-piperazin-1-yl)-phenyl]-3-ethyl-4-methoxy-1-phenyl-1H-pyrazolo[3,4-b]pyridine as a yellow solid.

Aufarbeitung

  1. customInto a 50-mL round-bottom flask purged
  2. temperaturemaintained with an inert atmosphere of nitrogen
  3. concentrationThe resulting mixture was concentrated under vacuum

Quellen und Nachweise

ORD-Eintrag
ord-988177dc72a240a68ef7f7ee98d29c80
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08822447B2

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