Chloroform → HCID 14208917, Verbindung

HRID 1252096Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1252096
[NH2:1][C:2]1[S:3][C:4]([S:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH3:13])=[N:5][N:6]=1.[C:14]([CH2:22][C:23](OCC)=[O:24])(=O)[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.C(Cl)(Cl)Cl>O>[CH2:8]([S:7][C:4]1[S:3][C:2]2=[N:1][C:14]([C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=3)=[CH:22][C:23](=[O:24])[N:6]2[N:5]=1)[CH2:9][CH2:10][CH2:11][CH2:12][CH3:13]

Komponenten

5

Edukt 3

HCID 6212ChloroformHCID 7170Ethyl benzoylacetateHCID 1579472Sbb043676

Produkt 1

HCID 14208917HCID 14208917, VerbindungAusbeute 99 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

Three point seven (3.7) grams of 2-amino-5-hexylthio-1,3,4-thiadiazole, 3.4 g of ethyl benzoylacetate and 5 g of polyphosphoric acid were mixed and stirred at 130°-140° C. for 30 minutes. After cooling, chloroform and water were added to the mixture and extraction was carried out. The organic layer was washed with a sodium hydrogen carbonate aqueous solution and water respectively and dried over anhydrous sodium sulfate. The solvent was distilled off and thus 5.5 g of 2-hexylthio-7-phenyl-5H-1,3,4-thiadiazolo[3,2-a]pyrimidin-5-one was obtained. Yield 99%. This substance was recrystallized from ethanol and the purified compound showed a m.p. of 90°-91° C.

Aufarbeitung

  1. temperatureAfter cooling
  2. washThe organic layer was washed with a sodium hydrogen carbonate aqueous solution and water respectively
  3. dry with materialdried over anhydrous sodium sulfate
  4. distillationThe solvent was distilled off

Quellen und Nachweise

ORD-Eintrag
ord-4640454875f74ede84f675b4639b3c1f
Quelldatensatz
uspto-grants-1988_05
Patentnummer
US04742063

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