Tetrabutylammonium Fluoride → tert-Butyl 4-((1-(5-chloro-1H-indazol-7-yl)-2-fluoroethoxy)methyl)-4-(4-fluorophenyl)piperidine-1-carboxylate

HRID 913949Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 913949
[Cl:1][C:2]1[CH:3]=[C:4]2[C:8](=[C:9]([CH:11]([O:14][CH2:15][C:16]3([C:29]4[CH:34]=[CH:33][C:32]([F:35])=[CH:31][CH:30]=4)[CH2:21][CH2:20][N:19]([C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[CH2:18][CH2:17]3)[CH2:12][F:13])[CH:10]=1)[NH:7][N:6](COCC[Si](C)(C)C)[CH2:5]2.CCCC[N+](CCCC)(CCCC)CCCC.[F-]>CCOCC>[Cl:1][C:2]1[CH:3]=[C:4]2[C:8](=[C:9]([CH:11]([O:14][CH2:15][C:16]3([C:29]4[CH:30]=[CH:31][C:32]([F:35])=[CH:33][CH:34]=4)[CH2:21][CH2:20][N:19]([C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[CH2:18][CH2:17]3)[CH2:12][F:13])[CH:10]=1)[NH:7][N:6]=[CH:5]2

Komponenten

4

Edukt 2

HCID 2724141Tetrabutylammonium FluorideHCID 67404638Tert-butyl 4-((1-(5-chloro-2-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazol-7-yl)-2-fluoroethoxy)methyl)-4-(4-fluorophenyl)piperidine-1-carboxylate

Produkt 1

HCID 57546100tert-Butyl 4-((1-(5-chloro-1H-indazol-7-yl)-2-fluoroethoxy)methyl)-4-(4-fluorophenyl)piperidine-1-carboxylateAusbeute 86 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3283Diethyl EtherLösungsmittel

Reaktionsbedingungen

Temperatur
55 °C

Versuchsvorschrift

Tert-butyl 4-((1-(5-chloro-2-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazol-7-yl)-2-fluoroethoxy)methyl)-4-(4-fluorophenyl)piperidine-1-carboxylate (420 mg, 0.660 mmol) was dissolved in TBAF (1M in THF) (8.5 mL, 8.50 mmol). The flask was sealed and heated at 55° C. for 1.5 h. The reaction was cooled to room temperature and diluted with ether, washed with water then brine, dried over MgSO4, filtered and concentrated. The crude product was purified by silica gel column chromatography (30%-40% EtOAc/Hex) to give title compound (286 mg, 0.565 mmol, 86% yield) as a colorless oil. LC/MS (HPLC method 3): tR=3.78 min, 506.3(MH)+.

Aufarbeitung

  1. customThe flask was sealed
  2. temperatureThe reaction was cooled to room temperature
  3. washwashed with water
  4. dry with materialbrine, dried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude product was purified by silica gel column chromatography (30%-40% EtOAc/Hex)

Quellen und Nachweise

ORD-Eintrag
ord-fad7a9f0192446759918fac2cd4b380a
Quelldatensatz
uspto-grants-2011_09
Patentnummer
US08026257B2

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