Dichloromethane → 3-(4-Aminophenyl)-5-chloroisonicotinonitrile

HRID 1159448Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1159448
Cl[C:2]1[CH:9]=[N:8][CH:7]=[C:6]([Cl:10])[C:3]=1[C:4]#[N:5].CC1(C)C(C)(C)OB([C:19]2[CH:24]=[CH:23][C:22]([NH2:25])=[CH:21][CH:20]=2)O1.C(Cl)Cl.C([O-])([O-])=O.[Na+].[Na+]>CN(C=O)C.O>[NH2:25][C:22]1[CH:23]=[CH:24][C:19]([C:2]2[CH:9]=[N:8][CH:7]=[C:6]([Cl:10])[C:3]=2[C:4]#[N:5])=[CH:20][CH:21]=1

Komponenten

7

Edukt 4

HCID 6344DichloromethaneHCID 10340Sodium CarbonateHCID 27346204-(Tetramethyl-1,3,2-dioxaborolan-2-yl)anilineHCID 111375993,5-Dichloropyridine-4-carbonitrile

Produkt 1

HCID 451233613-(4-Aminophenyl)-5-chloroisonicotinonitrileAusbeute 35,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
85 °C

Versuchsvorschrift

The product from Example 1B (3 g, 17.3 mmol), 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenylamine (4.18 g, 19 mmol), PdCl2dppf.CH2Cl2 (300 mg), and Na2CO3 (4.5 g) were combined in DMF (25 mL) and water (10 mL). The mixture was degassed with nitrogen and heated to 85° C. overnight The mixture was allowed to cool to room temperature and partitioned between water and ethyl acetate. The organic layer was dried (Na2SO4), filtered, and the filtrate was concentrated under reduced pressure. The residue was purified via silica gel chromatography eluting with hexanes:ethyl acetate (1:1) to provide 1.4 g of the title compound. 1H NMR (300 MHz, DMSO-D6) δ ppm 5.67 (s, 2H) 6.70 (d, J=8.48 Hz, 2H) 7.40 (d, J=8.82 Hz, 2H) 8.76 (s, 1H) 8.79 (s, 1H).

Aufarbeitung

  1. customThe mixture was degassed with nitrogen
  2. temperatureto cool to room temperature
  3. custompartitioned between water and ethyl acetate
  4. dry with materialThe organic layer was dried (Na2SO4)
  5. filtrationfiltered
  6. concentrationthe filtrate was concentrated under reduced pressure
  7. customThe residue was purified via silica gel chromatography
  8. washeluting with hexanes:ethyl acetate (1:1)

Quellen und Nachweise

ORD-Eintrag
ord-80bc70c4e17a40dba913b4aa23bd769a
Quelldatensatz
uspto-grants-2010_10
Patentnummer
US07812166B2

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