Methyl iodide → 3-Methyl-3-(4,6-bis(2,2,2-trifluoroethoxy)pyrimidin-2-yl)-1-methyl-1-(5-(trifluoromethyl)thiophen-2-yl)urea

HRID 1405952Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1405952
[H-].[Na+].[F:3][C:4]([F:34])([F:33])[CH2:5][O:6][C:7]1[CH:12]=[C:11]([O:13][CH2:14][C:15]([F:18])([F:17])[F:16])[N:10]=[C:9]([NH:19][C:20](=[O:32])[N:21]([CH3:31])[C:22]2[S:23][C:24]([C:27]([F:30])([F:29])[F:28])=[CH:25][CH:26]=2)[N:8]=1.[CH3:35]I>C1COCC1>[CH3:35][N:19]([C:9]1[N:8]=[C:7]([O:6][CH2:5][C:4]([F:3])([F:33])[F:34])[CH:12]=[C:11]([O:13][CH2:14][C:15]([F:18])([F:17])[F:16])[N:10]=1)[C:20](=[O:32])[N:21]([CH3:31])[C:22]1[S:23][C:24]([C:27]([F:28])([F:29])[F:30])=[CH:25][CH:26]=1

Komponenten

5

Edukt 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 73775810HCID 73775810, Verbindung

Produkt 1

HCID 867183893-Methyl-3-(4,6-bis(2,2,2-trifluoroethoxy)pyrimidin-2-yl)-1-methyl-1-(5-(trifluoromethyl)thiophen-2-yl)urea

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a suspension of NaH (18 mg, 0.36 mmol) in anhydrous THF (3 mL) was added a solution of the 3-(4,6-bis(2,2,2-trifluoro ethoxy)pyrimidin-2-yl)-1-methyl-1-(5-(trifluoromethyl)thiophen-2-yl)urea (2) (150 mg, 0.30 mmol). The reaction was stirred for 10 minutes after which time gas evolution had subsided. To the reaction was added methyl iodide (51.2 mg, 0.36 mmol). The reaction was stirred at ambient temperature for 2 h. The reaction was quenched with H2O (5 mL) and extracted with t-butyl ethyl ether (3×5 mL). The organics were combined and extracted with an equal amount of H2O. The organics were dried (MgSO4), filtered and concentrated to afford crude product. The crude material was purified by silica gel chromatography (5% EtOAc in pet ether) to afford 3-methyl-3-(4,6-bis(2,2,2-trifluoro ethoxy)pyrimidin-2-yl)-1-methyl-1-(5-(trifluoromethyl)thiophen-2-yl)urea (6) as an off white solid (31 mg, 20%), mp 113-114° C.; 1H NMR (400 MHz, Acetone-d6) δ 7.35-7.24 (m, 1H), 6.73 (d, J=4.2 Hz, 1H), 5.88 (s, 1H), 4.76 (q, J=8.7 Hz, 4H), 3.35 (s, 3H), 3.28 (s, 3H); ESIMS m/z 513 ([M+H]+).

Aufarbeitung

  1. stirringThe reaction was stirred at ambient temperature for 2 h
  2. customThe reaction was quenched with H2O (5 mL)
  3. extractionextracted with t-butyl ethyl ether (3×5 mL)
  4. extractionextracted with an equal amount of H2O
  5. dry with materialThe organics were dried (MgSO4)
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customto afford crude product
  9. customThe crude material was purified by silica gel chromatography (5% EtOAc in pet ether)

Quellen und Nachweise

ORD-Eintrag
ord-bbff1feb640248b092181e3cd06fed46
Quelldatensatz
uspto-grants-2014_12
Patentnummer
US08916578B2

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