Methyl iodide → HCID 67281550, Verbindung

HRID 1187497Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1187497
[CH2:1]([O:8][C:9]1[C:14](=[O:15])[C:13]([CH:16]([OH:21])[C:17]([F:20])([F:19])[F:18])=[CH:12][NH:11][C:10]=1[CH3:22])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:23](#N)C.C(=O)([O-])[O-].[K+].[K+].CI>ClCCl>[CH2:1]([O:8][C:9]1[C:14](=[O:15])[C:13]([CH:16]([OH:21])[C:17]([F:20])([F:18])[F:19])=[CH:12][N:11]([CH3:23])[C:10]=1[CH3:22])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Komponenten

6

Edukt 4

HCID 6328Methyl iodideHCID 6342AcetonitrileHCID 11430Potassium CarbonateHCID 67282369HCID 67282369, Verbindung

Produkt 1

HCID 67281550HCID 67281550, VerbindungAusbeute 70 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

A mixture of 3-benzyloxy-2-methyl-5-(2,2,2-trifluoro-1-hydroxy-ethyl)-1H-pyridin-4-one (2.07 g, 6.6 mmol), acetonitrile (60 mL), potassium carbonate (2.62 g. 19 mmole) and methyl iodide (15 mL, 0.24 mol) was heated to reflux for 30 min. On cooling to RT, the reaction mixture was filtered over a pad of CELITE™, and the filtrate was concentrated in vacuo to give a solid. The solid was dissolved in dichloromethane, and the resulting solution was washed with brine, dried over Na2S04, filtered and concentrated to afford 3-benzyloxy-1,2-dimethyl5-(2,2,2-trifluoro-1-hydroxy-ethyl)-1H-pyridin-4-one (1.48 g, 70% yield, HPLC Method 1 (Example 24), RT=15.4 min, HPLC purity (peak percent area): 99.9% at λ=280 nm). 1H NMR (DMSO-d6+D2O) δ ppm: 7.75 (s, 1H), 7.37, (m, 5H), 5.35 (q, J=7.1 Hz, 1H), 5.01 (m, 2H), 3.63 (s, 3H), 2.18 (s, 3H); MS-ESI (m/z) 328.1 [M+1]+, 220.2, 91.2 (100%).

Aufarbeitung

  1. temperaturewas heated
  2. temperatureto reflux for 30 min
  3. filtrationthe reaction mixture was filtered over a pad of CELITE™
  4. concentrationthe filtrate was concentrated in vacuo
  5. customto give a solid
  6. washthe resulting solution was washed with brine
  7. customdried over Na2S04
  8. filtrationfiltered
  9. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-be0320ca8a9e4de0bab57510b68ec44e
Quelldatensatz
uspto-grants-2014_03
Patentnummer
US08673943B2

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