Triethylamine → (E)-3-(2-chlorophenyl)acryloyl azide

HRID 1852259Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1852259
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1/[CH:8]=[CH:9]/[C:10]([OH:12])=O.C(N(CC)CC)C.C1C=CC(P([N:34]=[N+:35]=[N-:36])(C2C=CC=CC=2)=O)=CC=1>C1C=CC=CC=1>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1/[CH:8]=[CH:9]/[C:10]([N:34]=[N+:35]=[N-:36])=[O:12]

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 199401P,P-Diphenylphosphinic azideHCID 7006422-Chlorocinnamic acid

Produkt 1

HCID 86683272(E)-3-(2-chlorophenyl)acryloyl azideAusbeute 95 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 241BenzeneLösungsmittel

Versuchsvorschrift

To a solution of (E)-3-(2-chlorophenyl)acrylic acid (13 g, 71.2 mmol) in benzene (100 ml) was added triethylamine (14.4 g, 141 mmol) followed by DPPA (19.5 g, 71.2 mmol) at room temperature. The reaction mass was stirred at the same temperature for 18 h. The solvent was evaporated under reduced pressure and the residue was diluted with water and extracted with dichloromethane. The organic layer was dried over anhydrous sodium sulfate, filtered and evaporated to get crude compound. The crude compound was purified by conventional column chromatography (Silica gel, 60-120 mesh) using 10% ethyl acetate in pet ether as mobile phase to get the desire compound as pale yellow solid (14 g, 95%). 1H NMR (400 MHz, CDCl3): δ ppm 8.19-8.15 (d, J=16 Hz, 1H), 7.63-7.61 (d, J=8 Hz, 1H), 7.44-7.42 (m, 1H), 7.36-7.26 (m, 2H), 6.44-6.40 (d, J=16 Hz, 1H).

Aufarbeitung

  1. customThe solvent was evaporated under reduced pressure
  2. additionthe residue was diluted with water
  3. extractionextracted with dichloromethane
  4. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. customevaporated
  7. customto get crude compound
  8. customThe crude compound was purified by conventional column chromatography (Silica gel, 60-120 mesh)

Quellen und Nachweise

ORD-Eintrag
ord-f5ead786d3dd4ee598ff076e07999fbd
Quelldatensatz
uspto-grants-2015_02
Patentnummer
US08957203B2

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