Phenol → 5-t-Amyl-t-butylsalicylaldehyde

HRID 258210

Reaktionsgleichung

Reaktionsgleichung von HRID 258210
[C:1]([C:6]1[CH:11]=[CH:10][C:9]([OH:12])=[C:8]([C:13](C)(C)C)[CH:7]=1)([CH2:4][CH3:5])([CH3:3])[CH3:2].[OH-:17].[Na+].[C:19]1(O)[CH:24]=[CH:23]C=CC=1.[CH:26](Cl)(Cl)Cl.S(=O)(=O)(O)O>C(O)C.O>[C:1]([C:6]1[CH:7]=[C:8]([CH:13]=[O:17])[C:9]([O:12][C:24]([CH3:23])([CH3:19])[CH3:26])=[CH:10][CH:11]=1)([CH2:4][CH3:5])([CH3:2])[CH3:3]

Komponenten

8

Edukt 5

HCID 996PhenolHCID 1118Sulfuric AcidHCID 6212ChloroformHCID 14798Sodium HydroxideHCID 147658522-tert-Butyl-4-(2-methylbutan-2-yl)phenol

Produkt 1

HCID 197370285-t-Amyl-t-butylsalicylaldehydeAusbeute 37 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 702EthanolLösungsmittelHCID 962WaterLösungsmittel2×

Versuchsvorschrift

4-t-amyl-2-t-butylphenol (53 g, 0.24 mole) was dissolved in 150 ml absolute ethanol in a 1 L round-bottom flask equipped with a water-cooled condenser. Sodium hydroxide (96 g, 2.4 moles) was dissolved in 100 ml water, and the hot solution was added to the solution of phenol. Chloroform (57 g, 0.48 mole) was added in 1 ml portions over a 45-minute period. The resulting yellow-brown mixture was stirred 1 hour as it cooled to ambient temperature. The mixture was diluted into 500 ml of 1M sulfuric acid and extracted with 200 ml chloroform. The organic layer was isolated in a separatory funnel and dried over anhydrous magnesium sulfate. The mixture was filtered and rotoevaporated to a thick syrup The yield was 37%. The IR spectrum of the crude product showed a characteristic aldehyde carbonyl absorption. The product was used without further purification.

Aufarbeitung

  1. temperaturecooled condenser
  2. extractionextracted with 200 ml chloroform
  3. customThe organic layer was isolated in a separatory funnel
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationThe mixture was filtered
  6. customa characteristic aldehyde carbonyl absorption
  7. customThe product was used without further purification

Quellen und Nachweise

ORD-Eintrag
ord-4bfee79dc30e44a88d9d7ff7271cc9e6
Quelldatensatz
uspto-grants-1993_11
Patentnummer
US05266283

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