Methanol → 6-(2,4-Dichlorophenyl)-5-(4-chlorophenyl)-2-oxo-1,2-dihydropyridine-3-carbonitrile

HRID 916932Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 916932
CN(C)[CH:3]=[C:4]([C:15]1[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][CH:16]=1)[C:5]([C:7]1[CH:12]=[CH:11][C:10]([Cl:13])=[CH:9][C:8]=1[Cl:14])=O.[C:23]([CH2:25][C:26]([NH2:28])=[O:27])#[N:24].CO.[H-].[Na+]>CN(C=O)C>[Cl:14][C:8]1[CH:9]=[C:10]([Cl:13])[CH:11]=[CH:12][C:7]=1[C:5]1[NH:28][C:26](=[O:27])[C:25]([C:23]#[N:24])=[CH:3][C:4]=1[C:15]1[CH:16]=[CH:17][C:18]([Cl:21])=[CH:19][CH:20]=1

Komponenten

6

Edukt 4

HCID 887MethanolHCID 7898CyanoacetamideHCID 24758Sodium hydrideHCID 670199243-Dimethylamino-1-(2,4-dichlorophenyl)-2-(4-chlorophenyl)prop-2-en-1-one

Produkt 1

HCID 219848256-(2,4-Dichlorophenyl)-5-(4-chlorophenyl)-2-oxo-1,2-dihydropyridine-3-carbonitrile

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel2×

Reaktionsbedingungen

Temperatur
95 °C

Versuchsvorschrift

A solution of 3-dimethylamino-1-(2,4-dichlorophenyl)-2-(4-chlorophenyl)prop-2-en-1-one (14.4 mmol assumed) from Step A, cyanoacetamide (1.33 g, 15.8 mmol), and methanol (1.3 mL, 32 mmol) in DMF (35 mL) was added dropwise to a suspension of sodium hydride (60% in mineral oil) (1.45 g, 36 mmol) in DMF (16 mL) at rt. After the slow addition was complete, the reaction was heated to 95° C. for 2.5 h. Most of the DMF was then removed in vacuo before the reaction was diluted with aqueous 18% citric acid solution. The mixture was extracted twice with methylene chloride and the organic layers were washed with a portion of brine. The combined organic layers were dried over anhydrous sodium sulfate and concentrated in vacuo. The solid residue was triturated with ether, filtered, and air dried to afford 6-(2,4-dichlorophenyl)-5-(4-chlorophenyl)-2-oxo-1,2-dihydropyridine-3-nitrile. HPLC/MS: 375 (M+1), 377 (M+3); Rt=3.47 min; 1HNMR (CDCl3): δ 6.96 (br d, J=8.4 Hz, 2H), 7.14 (d, J=8.2 Hz, 1H), 7.25 (br d, J=8.4 Hz, 2H), 7.31 (dd, J=1.9 and 8.2 Hz, 1H), 7.50 (d, J=2.0 Hz, 1H), 7.996 (s, 1H).

Aufarbeitung

  1. additionAfter the slow addition
  2. customMost of the DMF was then removed in vacuo before the reaction
  3. additionwas diluted with aqueous 18% citric acid solution
  4. extractionThe mixture was extracted twice with methylene chloride
  5. washthe organic layers were washed with a portion of brine
  6. dry with materialThe combined organic layers were dried over anhydrous sodium sulfate
  7. concentrationconcentrated in vacuo
  8. customThe solid residue was triturated with ether
  9. filtrationfiltered
  10. customair dried

Quellen und Nachweise

ORD-Eintrag
ord-7cec868db25e47bc80757e441519da9f
Quelldatensatz
uspto-grants-2007_09
Patentnummer
US07271266B2

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