3-Ethyl-1-pentyn-3-ol → N-(3-(3-(3-ethyl-3-hydroxypentyl)phenyl)propyl)-2,2,2-trifluoroacetamide

HRID 454351

Reaktionsgleichung

Reaktionsgleichung von HRID 454351
Br[C:2]1[CH:3]=[C:4]([CH2:8][CH2:9][CH2:10][NH:11][C:12](=[O:17])[C:13]([F:16])([F:15])[F:14])[CH:5]=[CH:6][CH:7]=1.[CH2:18]([C:20]([OH:25])([CH2:23][CH3:24])[C:21]#[CH:22])[CH3:19].C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C>C(N(CC)CC)C.CN(C=O)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Cu]I>[CH2:18]([C:20]([OH:25])([CH2:23][CH3:24])[CH2:21][CH2:22][C:2]1[CH:3]=[C:4]([CH2:8][CH2:9][CH2:10][NH:11][C:12](=[O:17])[C:13]([F:16])([F:15])[F:14])[CH:5]=[CH:6][CH:7]=1)[CH3:19]

Komponenten

8

Edukt 3

HCID 226983-Ethyl-1-pentyn-3-olHCID 80271Tri-o-tolylphosphineHCID 57608389N-(3-(3-bromophenyl)propyl)-2,2,2-trifluoroacetamide

Produkt 1

HCID 86628449N-(3-(3-(3-ethyl-3-hydroxypentyl)phenyl)propyl)-2,2,2-trifluoroacetamide

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 178418476HCID 178418476, VerbindungKatalysatorHCID 6228DimethylformamideLösungsmittelHCID 8471TriethylamineLösungsmittel

Reaktionsbedingungen

Temperatur
90 °C

Versuchsvorschrift

To a degassed solution of N-(3-(3-bromophenyl)propyl)-2,2,2-trifluoroacetamide (3) (0.930 g, 3 mmol) and 3-ethylpent-1-yn-3-ol (4) (0.670 g, 6 mmol) in triethylamine (4 mL) and DMF (12 mL) was added PdCl2(PPh3)2 (0.053 g, 0.075 mmol), tri-o-tolylphosphine (0.046 g, 0.15 mmol), and CuI (0.014 g, 0.075 mmol) The resulting mixture was degassed and stirred under argon at 90° C. for 6 h. The mixture was cooled to room temperature then concentrated under reduced pressure and diluted with EtOAc (100 mL) and water (70 mL). After vigorous shaking, the layers were separated. The organic layer was treated with charcoal, dried over MgSO4, filtered, and concentrated under reduced pressure. Purification by flash column chromatography (7 to 60% EtOAc-hexanes gradient) gave N-(3-(3-(3-ethyl-3-hydroxypentyl)phenyl)propyl)-2,2,2-trifluoroacetamide (5) as a yellow oil. Yield (0.663 g, 65%): 1H NMR (400 MHz, DMSO-d6) δ 9.40 (s, 1H), 7.17-7.28 (m, 4H), 5.11 (s, 1H), 3.16 (q, J=7.2 Hz, 2H), 2.56 (t, J=7.2 Hz, 2H), 1.76 (quint, J=7.2 Hz, 2H), 1.53-1.67 (m, 4H), 0.97 (t, J=7.2 Hz, 6H).

Aufarbeitung

  1. customwas degassed
  2. temperatureThe mixture was cooled to room temperature
  3. concentrationthen concentrated under reduced pressure
  4. additiondiluted with EtOAc (100 mL) and water (70 mL)
  5. customAfter vigorous shaking, the layers were separated
  6. additionThe organic layer was treated with charcoal
  7. dry with materialdried over MgSO4
  8. filtrationfiltered
  9. concentrationconcentrated under reduced pressure
  10. customPurification by flash column chromatography (7 to 60% EtOAc-hexanes gradient)

Quellen und Nachweise

ORD-Eintrag
ord-d0c870ccfe6a4671a60816e208a4861d
Quelldatensatz
uspto-grants-2013_07
Patentnummer
US08492589B2

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