Hydrochloric Acid → N-(3-ethyl-1-((1-ethyl-1H-pyrazol-4-yl)methyl)-1H-indazol-4-yl)imidazo[1,2-a]pyridine-3-carboxamide dihydrochloride

HRID 79413

Reaktionsgleichung

Reaktionsgleichung von HRID 79413
[NH:1]1[CH:5]=[C:4]([CH2:6][N:7]2[C:15]3[C:10](=[C:11]([NH:16][C:17]([C:19]4[N:23]5[CH:24]=[CH:25][CH:26]=[CH:27][C:22]5=[N:21][CH:20]=4)=[O:18])[CH:12]=[CH:13][CH:14]=3)[C:9]([CH2:28][CH3:29])=[N:8]2)[CH:3]=[N:2]1.O.[OH-].[Cs+].Br[CH2:34][CH3:35].[ClH:36]>CN(C)C=O>[ClH:36].[ClH:36].[CH2:28]([C:9]1[C:10]2[C:15](=[CH:14][CH:13]=[CH:12][C:11]=2[NH:16][C:17]([C:19]2[N:23]3[CH:24]=[CH:25][CH:26]=[CH:27][C:22]3=[N:21][CH:20]=2)=[O:18])[N:7]([CH2:6][C:4]2[CH:5]=[N:1][N:2]([CH2:34][CH3:35])[CH:3]=2)[N:8]=1)[CH3:29]

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 6332Ethyl BromideHCID 23679066Caesium hydroxide--water (1/1/1)HCID 67259648N-(1-((1H-pyrazol-4-yl)methyl)-3-ethyl-1H-indazol-4-yl)imidazo[1,2-a]pyridine-3-carboxamide

Produkt 1

HCID 67260038N-(3-ethyl-1-((1-ethyl-1H-pyrazol-4-yl)methyl)-1H-indazol-4-yl)imidazo[1,2-a]pyridine-3-carboxamide dihydrochlorideAusbeute 19,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a solution of N-(1-((1H-pyrazol-4-yl)methyl)-3-ethyl-1H-indazol-4-yl)imidazo[1,2-a]pyridine-3-carboxamide (20 mg, 0.052 mmol; prepared according to Example 21, Step A) in dry N,N-dimethyl formamide (0.5 mL) was added cesium hydroxide hydrate (8.7 mg, 0.052 mmol) and bromoethane (5.7 mg, 0.052 mmol). The mixture was stirred under a nitrogen atmosphere for 60 minutes at ambient temperature. The mixture was filtered, washed with methanol and ethyl acetate, and concentrated under a stream of nitrogen. The material was purified using preparative thin layer chromatography on silica, eluting with 10% methanol in dichloromethane. The isolated product was dissolved in a mixture of dichloromethane and methanol. Hydrogen chloride (0.5 mmol; 2M solution in diethyl ether) was added. Removal of the solvent under reduced pressure followed by high vacuum gave N-(3-ethyl-1-((1-ethyl-1H-pyrazol-4-yl)methyl)-1H-indazol-4-yl)imidazo[1,2-a]pyridine-3-carboxamide dihydrochloride (5.0 mg). MS (APCI), positive scan, m/z=414.2 (M+H).

Aufarbeitung

  1. filtrationThe mixture was filtered
  2. washwashed with methanol and ethyl acetate
  3. concentrationconcentrated under a stream of nitrogen
  4. customThe material was purified
  5. washeluting with 10% methanol in dichloromethane
  6. dissolutionThe isolated product was dissolved in a mixture of dichloromethane and methanol
  7. customRemoval of the solvent under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-2b5e7b1ff73144e6b41f92a4ba12f5ad
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08841455B2

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