Acetic Anhydride → 5-Ethoxymethylene-3-methyl-4-oxo-thiazolidine-2-thione

HRID 963067

Reaktionsgleichung

Reaktionsgleichung von HRID 963067
[CH3:1][N:2]1[C:6](=[O:7])[CH2:5][S:4][C:3]1=[S:8].[C:9]([O:12][C:13](=O)C)(=O)[CH3:10]>C([O-])([O-])OCC>[CH2:9]([O:12][CH:13]=[C:5]1[S:4][C:3](=[S:8])[N:2]([CH3:1])[C:6]1=[O:7])[CH3:10]

Komponenten

4

Edukt 2

HCID 7918Acetic AnhydrideHCID 729004-Thiazolidinone, 3-methyl-2-thioxo-

Produkt 1

HCID 2471015-Ethoxymethylene-3-methyl-4-oxo-thiazolidine-2-thione

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 53630039EthylorthoformateLösungsmittel

Versuchsvorschrift

3-Methyl-4-oxo-thiazolidine-2-thione (403 g) and ethyl orthoformate (1370 ml) were added to acetic anhydride (775 ml), and the mixture was refluxed for 6 hours. The mixture was allowed to stand, and the resulting crystals were collected by filtration and washed with diisopropyl ether to give 342 g of 5-ethoxymethylene-3-methyl-4-oxo-thiazolidine-2-thione.

Aufarbeitung

  1. temperaturethe mixture was refluxed for 6 hours
  2. filtrationthe resulting crystals were collected by filtration
  3. washwashed with diisopropyl ether

Quellen und Nachweise

ORD-Eintrag
ord-8a0e850c286743f58e512debd432ad5f
Quelldatensatz
uspto-grants-1998_06
Patentnummer
US05760032

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