Sodium Carbonate → 3-bromo-5-(2,6-difluorophenyl)-7-(1H-pyrazol-4-yl)-2-{[2-(trimethylsilyl)ethoxy]methyl}-2H-pyrazolo[4,3-c]isoquinoline

HRID 1256253Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1256253
[Br:1][C:2]1[N:3]([CH2:24][O:25][CH2:26][CH2:27][Si:28]([CH3:31])([CH3:30])[CH3:29])[N:4]=[C:5]2[C:14]3[CH:13]=[CH:12][C:11](I)=[CH:10][C:9]=3[C:8]([C:16]3[C:21]([F:22])=[CH:20][CH:19]=[CH:18][C:17]=3[F:23])=[N:7][C:6]=12.O1CCOCC1.[NH:38]1[CH:42]=[C:41](B(O)O)[CH:40]=[N:39]1.C(=O)([O-])[O-].[Na+].[Na+]>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.O>[Br:1][C:2]1[N:3]([CH2:24][O:25][CH2:26][CH2:27][Si:28]([CH3:31])([CH3:30])[CH3:29])[N:4]=[C:5]2[C:14]3[CH:13]=[CH:12][C:11]([C:41]4[CH:42]=[N:38][NH:39][CH:40]=4)=[CH:10][C:9]=3[C:8]([C:16]3[C:21]([F:22])=[CH:20][CH:19]=[CH:18][C:17]=3[F:23])=[N:7][C:6]=12

Komponenten

7

Edukt 4

HCID 10340Sodium CarbonateHCID 312751,4-DioxaneHCID 177502781H-Pyrazole-4-boronic acidHCID 667704163-bromo-5-(2,6-difluorophenyl)-2-(2-trimethylsilanylethoxymethyl)-7-iodo-2H-pyrazolo[4,3-c]isoquinoline

Produkt 1

HCID 667722013-bromo-5-(2,6-difluorophenyl)-7-(1H-pyrazol-4-yl)-2-{[2-(trimethylsilyl)ethoxy]methyl}-2H-pyrazolo[4,3-c]isoquinolineAusbeute 44 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 962WaterLösungsmittel

Versuchsvorschrift

342 mg of 3-bromo-5-(2,6-difluorophenyl)-2-(2-trimethylsilanylethoxymethyl)-7-iodo-2H-pyrazolo[4,3-c]isoquinoline are introduced into 13 ml of 1,4-dioxane. 74 mg of 4-pyrazoleboronic acid, 77 mg of Pd(PPh3)4 and 165 mg of sodium carbonate are added. The mixture is heated at reflux for 4 h 30 min. After cooling, the mixture is poured into water, extracted with AcOEt, washed with saturated NaCl solution, dried over MgSO4, filtered and concentrated under RP. The product is purified by flash chromatography on silica gel (15-40 μm), eluting with a DCM/methanol mixture (95/05 by vol.), to give 136 mg of 3-bromo-5-(2,6-difluorophenyl)-7-(1H-pyrazol-4-yl)-2-{[2-(trimethylsilyl)ethoxy]methyl}-2H-pyrazolo[4,3-c]isoquinoline (white foam), which is used as it is in the following step.

Aufarbeitung

  1. temperatureThe mixture is heated
  2. temperatureat reflux for 4 h 30 min
  3. temperatureAfter cooling
  4. extractionextracted with AcOEt
  5. washwashed with saturated NaCl solution
  6. dry with materialdried over MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated under RP
  9. customThe product is purified by flash chromatography on silica gel (15-40 μm)
  10. washeluting with a DCM/methanol mixture (95/05 by vol.)

Quellen und Nachweise

ORD-Eintrag
ord-2eac97fa817a42c1979295b42831e2d2
Quelldatensatz
uspto-grants-2013_06
Patentnummer
US08461175B2

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