3-Chloro-1H-indazole → N-tert-butyl-2-(3-chloro-1H-indazol-1-yl)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide

HRID 246494

Reaktionsgleichung

Reaktionsgleichung von HRID 246494
Br[C:2]1[N:3]=[C:4]2[C:10]([C:11]([NH:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])=[CH:9][N:8]([CH2:18][O:19][CH2:20][CH2:21][Si:22]([CH3:25])([CH3:24])[CH3:23])[C:5]2=[N:6][CH:7]=1.[Cl:26][C:27]1[C:35]2[C:30](=[CH:31][CH:32]=[CH:33][CH:34]=2)[NH:29][N:28]=1.CC(C)([O-])C.[Na+]>O1CCOCC1.CC(C)([P](C(C)(C)C)([Pd][P](C(C)(C)C)(C(C)(C)C)C(C)(C)C)C(C)(C)C)C>[C:14]([NH:13][C:11]([C:10]1[C:4]2[C:5](=[N:6][CH:7]=[C:2]([N:29]3[C:30]4[C:35](=[CH:34][CH:33]=[CH:32][CH:31]=4)[C:27]([Cl:26])=[N:28]3)[N:3]=2)[N:8]([CH2:18][O:19][CH2:20][CH2:21][Si:22]([CH3:25])([CH3:24])[CH3:23])[CH:9]=1)=[O:12])([CH3:17])([CH3:16])[CH3:15]

Komponenten

6

Edukt 3

HCID 958943-Chloro-1H-indazoleHCID 23676156Sodium t-butoxideHCID 715756452-bromo-N-(tert-butyl)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide

Produkt 1

HCID 71280262N-tert-butyl-2-(3-chloro-1H-indazol-1-yl)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418851HCID 178418851, VerbindungKatalysatorHCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
125 °C

Versuchsvorschrift

To a stirred solution of 2-bromo-N-tert-butyl-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide (136 mg, 318 μmol), 3-chloro-1H-indazole (48.6 mg, 318 mmol) in dioxane (3.5 mL) was added sodium tert-butoxide (67.3 mg, 700 μmol) and bis(tri-tert-butylphosphine)palladium(0) (16.3 mg, 31.8 μmol). The mixture was degassed then heated in sealed tube at 125° C. for two days. The mixture was cooled, filtered through celite, the cake washed with ethyl acetate, and the combined filtrates were concentrated in vacuo. Purification by chromatography (silica, 24 g Analogix column, 0-40% ethyl acetate in hexanes) gave N-tert-butyl-2-(3-chloro-1H-indazol-1-yl)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide. 1H NMR (CDCl3) δ: 9.12 (s, 1H), 8.61 (d, J=8.5 Hz, 1H), 8.36 (s, 1H), 7.82 (d, J=8.0 Hz, 1H), 7.70 (s, 1H), 7.58 (ddd, J=8.5, 7.2, 1.1 Hz, 1H), 7.42 (ddd, J=8.1, 7.1, 0.9 Hz, 1H), 5.72 (s, 2H), 3.55-3.62 (m, 2H), 1.61 (s, 9H), 0.95 (d, J=16.6 Hz, 2H), −0.03 (s, 9H).

Aufarbeitung

  1. customThe mixture was degassed
  2. temperatureThe mixture was cooled
  3. filtrationfiltered through celite
  4. washthe cake washed with ethyl acetate
  5. concentrationthe combined filtrates were concentrated in vacuo
  6. customPurification by chromatography (silica, 24 g Analogix column, 0-40% ethyl acetate in hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-eb3993f8fc4a49b7bf571f81ca99b532
Quelldatensatz
uspto-grants-2014_02
Patentnummer
US08658646B2

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