p-Toluenesulfonic acid → 6-Acetoxy-2-naphthyl-alpha-methylacetic acid

HRID 1284363Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1284363
[OH:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([CH:12]([CH3:16])[C:13]([OH:15])=[O:14])[CH:6]=[CH:5]2.[C:17](OC(=O)C)(=[O:19])[CH3:18].C1(C)C=CC(S(O)(=O)=O)=CC=1>>[C:17]([O:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([CH:12]([CH3:16])[C:13]([OH:15])=[O:14])[CH:6]=[CH:5]2)(=[O:19])[CH3:18]

Komponenten

4

Edukt 3

HCID 6101p-Toluenesulfonic acidHCID 7918Acetic AnhydrideHCID 162920Desmethylnaproxen

Produkt 1

HCID 203351926-Acetoxy-2-naphthyl-alpha-methylacetic acid

Versuchsvorschrift

A mixture of 2.2 g. of 6-hydroxy-2-naphthyl-α-methylacetic acid, 50 ml. of acetic anhydride, and 100 mg. of p-toluenesulfonic acid is stirred for four hours at 50°C. The mixture is evaporated, water is added, and the mixture is extracted with diethyl ether which is washed with water to neutrality, dried over sodium sulfate, and evaporated to yield 6-acetoxy-2-naphthyl-α-methylacetic acid.

Aufarbeitung

  1. additionA mixture of 2.2 g
  2. customThe mixture is evaporated
  3. additionwater is added
  4. extractionthe mixture is extracted with diethyl ether which
  5. washis washed with water to neutrality
  6. dry with materialdried over sodium sulfate
  7. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-bb0722cd085e44f89645ee3f31ed8d75
Quelldatensatz
uspto-grants-1976_08
Patentnummer
US03978116

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