Water → (3,5-Dibromo-4-methoxy-phenyl)-[7-(2-trifluoromethyl-phenyl)-2,3-dihydro-pyrido[2,3-b][1,4]oxazin-1-yl]-methanone

HRID 1943693Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1943693
[F:1][C:2]([F:20])([F:19])[C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[CH:18]=[N:17][C:12]2[O:13][CH2:14][CH2:15][NH:16][C:11]=2[CH:10]=1.[Br:21][C:22]1[CH:23]=[C:24]([CH:28]=[C:29]([Br:33])[C:30]=1[O:31][CH3:32])[C:25](Cl)=[O:26].C(N(CC)CC)C.O>ClCCl>[Br:21][C:22]1[CH:23]=[C:24]([C:25]([N:16]2[CH2:15][CH2:14][O:13][C:12]3[N:17]=[CH:18][C:9]([C:4]4[CH:5]=[CH:6][CH:7]=[CH:8][C:3]=4[C:2]([F:1])([F:19])[F:20])=[CH:10][C:11]2=3)=[O:26])[CH:28]=[C:29]([Br:33])[C:30]=1[O:31][CH3:32]

Komponenten

6

Edukt 4

HCID 962WaterHCID 8471TriethylamineHCID 337796303,5-Dibromo-4-methoxybenzoyl chlorideHCID 669363367-(2-trifluoromethyl-phenyl)-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazine

Produkt 1

HCID 66936860(3,5-Dibromo-4-methoxy-phenyl)-[7-(2-trifluoromethyl-phenyl)-2,3-dihydro-pyrido[2,3-b][1,4]oxazin-1-yl]-methanoneAusbeute 34 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

In a 10 ml flask, 7-(2-trifluoromethyl-phenyl)-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazine (67 mg, 0.24 mmol) and 3,5-dibromo-4-methoxy-benzoyl chloride (118 mg, 0.36 mmol) were dissolved in dichloromethane. Triethylamine (0.17 ml, 1.20 mmol) was added thereto and then stirred at room temperature for 2 hours. After completion of the reaction by adding water dropwise, the mixture was extracted with dichloromethane, and the combined organic layer was dried over anhydrous sodium sulfate (Na2SO4), filtered and evaporated under reduced pressure. The residue was purified by column chromatography on silica eluting with a solvent of dichloromethane. The fractions containing the product were collected and evaporated to obtain (3,5-dibromo-4-methoxy-phenyl)-[7-(2-trifluoromethyl-phenyl)-2,3-dihydro-pyrido[2,3-b][1,4]oxazin-1-yl]-methanone as white solid (46 mg, 34%).

Aufarbeitung

  1. customAfter completion of the reaction
  2. extractionthe mixture was extracted with dichloromethane
  3. dry with materialthe combined organic layer was dried over anhydrous sodium sulfate (Na2SO4)
  4. filtrationfiltered
  5. customevaporated under reduced pressure
  6. customThe residue was purified by column chromatography on silica eluting with a solvent of dichloromethane
  7. additionThe fractions containing the product
  8. customwere collected
  9. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-c4176cfe557b42b1af8fc8bf4e2b910b
Quelldatensatz
uspto-grants-2013_03
Patentnummer
US08394792B2

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