Trityl chloride → (R)-tert-butyl 3-(3-(3-bromo-1-trityl-1H-indazol-5-yl)-1H-1,2,4-triazol-5-yl)piperidine-1-carboxylate

HRID 1465699Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1465699
[H-].[Na+].[Br:3][C:4]1[C:12]2[C:7](=[CH:8][CH:9]=[C:10]([C:13]3[N:17]=[C:16]([C@@H:18]4[CH2:23][CH2:22][CH2:21][N:20]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[CH2:19]4)[NH:15][N:14]=3)[CH:11]=2)[NH:6][N:5]=1.[C:31](Cl)([C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1)([C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=1)[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1>CN(C=O)C>[Br:3][C:4]1[C:12]2[C:7](=[CH:8][CH:9]=[C:10]([C:13]3[N:17]=[C:16]([C@@H:18]4[CH2:23][CH2:22][CH2:21][N:20]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[CH2:19]4)[NH:15][N:14]=3)[CH:11]=2)[N:6]([C:31]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)([C:44]2[CH:45]=[CH:46][CH:47]=[CH:48][CH:49]=2)[C:38]2[CH:39]=[CH:40][CH:41]=[CH:42][CH:43]=2)[N:5]=1

Komponenten

5

Edukt 3

HCID 6456Trityl chlorideHCID 24758Sodium hydrideHCID 178451955HCID 178451955, Verbindung

Produkt 1

HCID 86695578(R)-tert-butyl 3-(3-(3-bromo-1-trityl-1H-indazol-5-yl)-1H-1,2,4-triazol-5-yl)piperidine-1-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

Added Sodium Hydride (100 mg; 2.5 mmol) to a solution of (R)-tert-butyl 3-(3-(3-bromo-1H-indazol-5-yl)-1H-1,2,4-triazol-5-yl)piperidine-1-carboxylate (530 mg, 0.988 mmol) in DMF (5 ml) at 0° C., then stirred for 30 minutes. Trityl Chloride (570 mg, 2.05 mmol) was added, and stirred at room temperature overnight. Added water (100 ml), filtered precipitated solid, washed with water, dried, then chromatographed on silica gel eluting with 30% v/v EtOAc/Hexanes to yield a mixture of mono and dialkylated products (560 mg, 8:2 mono/dialkylation).

Aufarbeitung

  1. stirringstirred at room temperature overnight
  2. filtrationAdded water (100 ml), filtered
  3. customprecipitated solid
  4. washwashed with water
  5. customdried
  6. customchromatographed on silica gel eluting with 30% v/v EtOAc/Hexanes
  7. customto yield
  8. additiona mixture of mono and

Quellen und Nachweise

ORD-Eintrag
ord-2a0424c0ea7443a197beef34032ad632
Quelldatensatz
uspto-grants-2015_04
Patentnummer
US08999966B2

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