Acetic Acid → Isobutyl 2-acetyloxy-5-[2(4-sulfophenyl)ethenyl]benzoate potassium salt

HRID 1464172Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1464172
[K:1].[K].[OH:3][C:4]1[CH:16]=[CH:15][C:14]([CH:17]=[CH:18][C:19]2[CH:24]=[CH:23][C:22]([S:25]([OH:28])(=[O:27])=[O:26])=[CH:21][CH:20]=2)=[CH:13][C:5]=1[C:6]([O:8][CH2:9][CH:10]([CH3:12])[CH3:11])=[O:7].[C:29](O)(=[O:31])[CH3:30].C(OC(=O)C)(=O)C.S(=O)(=O)(O)O>C(OCC)C>[K:1].[C:29]([O:3][C:4]1[CH:16]=[CH:15][C:14]([CH:17]=[CH:18][C:19]2[CH:20]=[CH:21][C:22]([S:25]([OH:28])(=[O:26])=[O:27])=[CH:23][CH:24]=2)=[CH:13][C:5]=1[C:6]([O:8][CH2:9][CH:10]([CH3:12])[CH3:11])=[O:7])(=[O:31])[CH3:30]

Komponenten

6

Edukt 4

HCID 176Acetic AcidHCID 1118Sulfuric AcidHCID 7918Acetic Anhydride2×HCID 86747766Isobutyl 2-hydroxy-5-[2-(4-sulfophenyl)ethenyl]benzoate dipotassium salt

Produkt 1

HCID 86747765Isobutyl 2-acetyloxy-5-[2(4-sulfophenyl)ethenyl]benzoate potassium salt

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3283Diethyl EtherLösungsmittel

Versuchsvorschrift

Isobutyl 2-hydroxy-5-[2-(4-sulfophenyl)ethenyl]benzoate dipotassium salt (37.2 g, 0.09 mol) was added to a boiling solution of acetic acid (20 ml) and acetic anhydride (80 ml). Sulfuric acid (8 ml) was added cautiously and the mixture refluxed until the major part of the solids had dissolved, and then more acetic anhydride (80 ml) was added. After boiling for 1 h, the mixture was cooled to room temperature. Diethyl ether (350 ml) was added and the suspension filtered and washed with diethyl ether. Yield 36.1 g (88%)

Aufarbeitung

  1. temperaturethe mixture refluxed until the major part of the solids
  2. dissolutionhad dissolved
  3. filtrationthe suspension filtered
  4. washwashed with diethyl ether

Quellen und Nachweise

ORD-Eintrag
ord-c53f6c1a269644a9980a7c5f56438869
Quelldatensatz
uspto-grants-1994_04
Patentnummer
US05302718

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