2,4-Di-tert-butylphenol → 2,4,6-Tri-tert-butylphenol

HRID 486978

Reaktionsgleichung

Reaktionsgleichung von HRID 486978
[C:1]([C:5]1[CH:10]=[C:9]([C:11]([CH3:14])([CH3:13])[CH3:12])[CH:8]=[CH:7][C:6]=1[OH:15])([CH3:4])([CH3:3])[CH3:2].C([Al](CC)CC)C.[CH2:23]=[C:24]([CH3:26])[CH3:25]>CCCCCC>[C:1]([C:5]1[CH:10]=[C:9]([C:11]([CH3:14])([CH3:13])[CH3:12])[CH:8]=[C:7]([C:24]([CH3:26])([CH3:25])[CH3:23])[C:6]=1[OH:15])([CH3:4])([CH3:3])[CH3:2]

Komponenten

5

Edukt 3

HCID 73112,4-Di-tert-butylphenol2×HCID 8255IsobutyleneHCID 16682930Triethylaluminum

Produkt 1

HCID 129022,4,6-Tri-tert-butylphenol

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8058HexaneLösungsmittel

Versuchsvorschrift

By the method used in Examples 1-33, 171 g (0.83 mol) 2,4-di-tert-butylphenol (2,4-DTBP) was dissolved in 350 ml hexane, and the amount (if any) of various polyhalophenols indicated in Table VI was added to the mixture, followed by addition of 5.8 mmol triethylaluminum to said mixture, at room temperature. The 2,4-DTBP was then reacted with 1.2-1.6 mol isobutene at 1.7 bar and 30° C., to form 2,4,6-tri-tert-butylphenol (2,4,6-TTBP).

Aufarbeitung

  1. additionwas added to the mixture
  2. customat room temperature

Quellen und Nachweise

ORD-Eintrag
ord-d7d07ec41dcb40d98d77f1bc90c4b85b
Quelldatensatz
uspto-grants-1994_03
Patentnummer
US05292970

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