Dimethylformamide → 4-[2-(Dimethylamino)ethenyl]-3-nitrobenzonitrile

HRID 2416270Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2416270
[N+:1]([C:4]1[CH:5]=[C:6]([CH3:12])[CH:7]=[CH:8][C:9]=1[C:10]#N)([O-:3])=[O:2].[CH3:13][N:14]([CH:16]=O)[CH3:15].C[NH:19]C.CN(C)C=O>O>[CH3:13][N:14]([CH3:16])[CH:15]=[CH:10][C:9]1[CH:8]=[CH:7][C:6]([C:12]#[N:19])=[CH:5][C:4]=1[N+:1]([O-:3])=[O:2]

Komponenten

5

Edukt 3

HCID 6228DimethylformamideHCID 962352-Nitro-4-toluonitrileHCID 86587686HCID 86587686, Verbindung

Produkt 1

HCID 8941414-[2-(Dimethylamino)ethenyl]-3-nitrobenzonitrileAusbeute 74 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
110 °C

Versuchsvorschrift

A mixture of 3-nitro-p-tolunitrile (30.0 g, 185 mmol), DMF (100 mL), and dimethylformamide dimethylamine (24.3 g, 204 mmol) was heated to 110° C. for 16 h. The deep red solution was poured into H2O (1 L) and extracted with EtOAc (4×250 mL). The organic layers were washed with H2O, brine, dried over sodium sulfate, filtered, and concentrated in vacuo. The solid residue was triturated with hexanes to give 4-(2-dimethylamino-vinyl)-3-nitro-benzonitrile (28.5 g, 74%) after filtration. 1H NMR (400 MHz, DMSO-d6) 8.22 (1H, s), 7.83 (2H, m), 7.65 (1H, m), 5.67 (1H, d, J=13 Hz), 2.98 (6H, s); MS m/e 219 (M+H)+. Anal calcd. for C11H11N3O2: C, 60.82; H, 5.10; N, 19.34. Found: C, 60.54; H, 4.99; N, 19.40.

Aufarbeitung

  1. extractionextracted with EtOAc (4×250 mL)
  2. washThe organic layers were washed with H2O, brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe solid residue was triturated with hexanes

Quellen und Nachweise

ORD-Eintrag
ord-bca89cf8ffb2409382eb020fd2d5e116
Quelldatensatz
uspto-grants-2004_11
Patentnummer
US06822100B2

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