Einecs 211-027-4 → 2,4-Dihydroxybenzonitrile

HRID 893028

Reaktionsgleichung

Reaktionsgleichung von HRID 893028
C[O:2][C:3]1[CH:10]=[C:9]([O:11]C)[CH:8]=[CH:7][C:4]=1[C:5]#[N:6].[Cl-].[NH+]1C=CC=CC=1>O>[OH:2][C:3]1[CH:10]=[C:9]([OH:11])[CH:8]=[CH:7][C:4]=1[C:5]#[N:6]

Komponenten

4

Edukt 2

HCID 69401Einecs 211-027-4HCID 777502,4-Dimethoxybenzonitrile

Produkt 1

HCID 30175202,4-DihydroxybenzonitrileAusbeute 70,6 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

2,4-dimethoxybenzonitrile (2 g) was mixed with pyridinium chloride (5.67 g) and the reaction mixture was fused at 210° C. for 2 hours. After being left to stand at room temperature overnight, the mixture was diluted with water and extracted into diethyl ether. The ether extracts were washed with water, dried over magnesium sulphate and concentrated to give a pink solid which was washed with petrol and air dried to give 2,4-dihydroxybenzonitrile (1.17 g) (m pt 176°-178° C.).

Aufarbeitung

  1. waitAfter being left
  2. waitto stand at room temperature overnight
  3. extractionextracted into diethyl ether
  4. washThe ether extracts were washed with water
  5. dry with materialdried over magnesium sulphate
  6. concentrationconcentrated
  7. customto give a pink solid which
  8. washwas washed with petrol and air
  9. customdried

Quellen und Nachweise

ORD-Eintrag
ord-36be83b118b94df19f3b2a5413ac103c
Quelldatensatz
uspto-grants-1992_06
Patentnummer
US05120869

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