Iodine → 2-Propyl-3-t-butyl-4-hydroxy-5-isopropylphenol

HRID 327324

Reaktionsgleichung

Reaktionsgleichung von HRID 327324
[CH2:1]([C:4]1[C:5](=[O:18])[CH:6]=[C:7]([CH:15]([CH3:17])[CH3:16])[C:8](=[O:14])[C:9]=1[C:10]([CH3:13])([CH3:12])[CH3:11])[CH2:2][CH3:3].C[SiH](C)O[SiH](C)C.II>C(Cl)Cl>[CH2:1]([C:4]1[C:9]([C:10]([CH3:12])([CH3:11])[CH3:13])=[C:8]([OH:14])[C:7]([CH:15]([CH3:17])[CH3:16])=[CH:6][C:5]=1[OH:18])[CH2:2][CH3:3]

Komponenten

5

Edukt 3

HCID 807IodineHCID 186591,1,3,3-Tetramethyl-disiloxaneHCID 570664232-Propyl-3-t-butyl-5-isopropylbenzoquinone

Produkt 1

HCID 540178862-Propyl-3-t-butyl-4-hydroxy-5-isopropylphenol

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

Dissolve 2-propyl-3-t-butyl-5-isopropylbenzoquinone (10mmol), 1,1,3,3-tetramethyldisiloxane (1.79mL, 10mmol) and iodine (0.05g) in methylene chloride (30mL). Stir at reflux for 30 minutes and extract with 1N sodium hydroxide (30mL). Acidify the aqueous phase with concentrated hydrochloric acid and extract into ethyl acetate (4×10mL), dry (NazSO4) and evaporate the solvent in vacuo to give 2-propyl-3-t-butyl-4-hydroxy-5-isopropylphenol.

Aufarbeitung

  1. temperatureat reflux for 30 minutes
  2. extractionextract with 1N sodium hydroxide (30mL)
  3. extractionextract into ethyl acetate (4×10mL)
  4. customdry (NazSO4)
  5. customevaporate the solvent in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-b46a9b0399e14315810fcbac9dd0be5b
Quelldatensatz
uspto-grants-1993_12
Patentnummer
US05272252

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