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tert-Butyl 4-(4-(4-(benzyloxy)-4'-(trifluoromethyl)biphenyl-3-yl)pyridin-2-yl)piperazine-1-carboxylate → Tert-butyl 4-(4-(4-hydroxy-4'-(trifluoromethyl)biphenyl-3-yl)pyridin-2-yl)piperazine-1-carboxylate

HRID 1619715
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1619715
C([O:8][C:9]1[CH:14]=[CH:13][C:12]([C:15]2[CH:20]=[CH:19][C:18]([C:21]([F:24])([F:23])[F:22])=[CH:17][CH:16]=2)=[CH:11][C:10]=1[C:25]1[CH:30]=[CH:29][N:28]=[C:27]([N:31]2[CH2:36][CH2:35][N:34]([C:37]([O:39][C:40]([CH3:43])([CH3:42])[CH3:41])=[O:38])[CH2:33][CH2:32]2)[CH:26]=1)C1C=CC=CC=1>C(O)C.[OH-].[OH-].[Pd+2]>[OH:8][C:9]1[CH:14]=[CH:13][C:12]([C:15]2[CH:16]=[CH:17][C:18]([C:21]([F:23])([F:24])[F:22])=[CH:19][CH:20]=2)=[CH:11][C:10]=1[C:25]1[CH:30]=[CH:29][N:28]=[C:27]([N:31]2[CH2:36][CH2:35][N:34]([C:37]([O:39][C:40]([CH3:43])([CH3:42])[CH3:41])=[O:38])[CH2:33][CH2:32]2)[CH:26]=1
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

4

Edukt 1

HCID 58042339tert-Butyl 4-(4-(4-(benzyloxy)-4'-(trifluoromethyl)biphenyl-3-yl)pyridin-2-yl)piperazine-1-carboxylate

Produkt 1

HCID 136200880Tert-butyl 4-(4-(4-hydroxy-4'-(trifluoromethyl)biphenyl-3-yl)pyridin-2-yl)piperazine-1-carboxylateAusbeute 59,1 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 9942167Palladium hydroxideKatalysatorHCID 702EthanolLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

tert-Butyl 4-(4-(4-(benzyloxy)-4′-(trifluoromethyl)biphenyl-3-yl)pyridin-2-yl)piperazine-1-carboxylate (Preparation 115, 1.30 g, 2.20 mmol) was dissolved in ethanol (20 mL) at room temperature and palladium hydroxide on activated charcoal (130 mg) was added. The reaction mixture was heated at 60° C. under a hydrogen atmosphere (50 psi) for 18 hours. The mixture was then filtered through a pad of Celite™, rinsed with ethanol and concentrated in vacuo. The residue was purified on silica gel by Biotage (5% to 60% ethyl acetate in heptane over 20 CV). Further purification by reverse phase using acetonitrile/water (5/95-95/5) with 0.1% formic acid as eluent gave the title compound (650 mg, 59%) as a white powder.

Aufarbeitung

  1. filtrationThe mixture was then filtered through a pad of Celite™
  2. washrinsed with ethanol
  3. concentrationconcentrated in vacuo
  4. customThe residue was purified on silica gel by Biotage (5% to 60% ethyl acetate in heptane over 20 CV)
  5. customFurther purification by reverse phase

Quellen und Nachweise

ORD-Eintrag
ord-096e3baa91c04940aa412b57f7ffdb93
Quelldatensatz
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08772293B2

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