Hydrochloric Acid → 3-(4-Chloro-2-ethyl-6-fluorobenzofuran-7-yl)-6-trifluoromethyluracil

HRID 366314

Reaktionsgleichung

Reaktionsgleichung von HRID 366314
[NH2:1]/[C:2](/[C:9]([F:12])([F:11])[F:10])=[CH:3]\[C:4]([O:6]CC)=O.C1CCN2C(=NCCC2)CC1.[Cl:24][C:25]1[C:30]2[CH:31]=[C:32]([CH2:34][CH3:35])[O:33][C:29]=2[C:28]([NH:36][C:37](OC2C=CC=CC=2)=[O:38])=[C:27]([F:46])[CH:26]=1.Cl>CN(C)C=O>[Cl:24][C:25]1[C:30]2[CH:31]=[C:32]([CH2:34][CH3:35])[O:33][C:29]=2[C:28]([N:36]2[C:4](=[O:6])[CH:3]=[C:2]([C:9]([F:10])([F:11])[F:12])[NH:1][C:37]2=[O:38])=[C:27]([F:46])[CH:26]=1

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 5702529Ethyl 3-amino-4,4,4-trifluorocrotonateHCID 232891804-Chloro-2-ethyl-6-fluoro-7-phenoxycarbonylaminobenzofuran

Produkt 1

HCID 232891763-(4-Chloro-2-ethyl-6-fluorobenzofuran-7-yl)-6-trifluoromethyluracilAusbeute 44 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

80 ml of N,N-dimethylformamide was added to 5.8 g (32 mmol) of ethyl 3-amino-4,4,4-trifluorocrotonate and 6.6 g (43 mmol) of 1,8-diazabicyclo[5.4.0]-7-undecene, and 9.6 g (29 mmol) of 4-chloro-2-ethyl-6-fluoro-7-phenoxycarbonylaminobenzofuran was gradually added thereto at room temperature. After stirring at 60° C. for 8 hours, the reaction solution was poured into a 10% hydrochloric acid aqueous solution and acidified, and then extracted with ethyl acetate. The organic layer was washed sequentially with water and a saturated sodium chloride aqueous solution and then dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure. Then, the obtained residue was purified by silica gel column chromatography to obtain 4.8 g (yield: 44%) of the desired product as white crystals. Melting point: 154-155° C.

Aufarbeitung

  1. additionwas gradually added
  2. customat room temperature
  3. extractionextracted with ethyl acetate
  4. washThe organic layer was washed sequentially with water
  5. dry with materiala saturated sodium chloride aqueous solution and then dried over anhydrous magnesium sulfate
  6. distillationThe solvent was distilled off under reduced pressure
  7. customThen, the obtained residue was purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-8111caab964842e98b7fbc19b9ef2c26
Quelldatensatz
uspto-grants-2000_10
Patentnummer
US06130187

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