3-Sulfolene → 2,5-Bis-(2-thienylmethylidene)-2,5-dihydrothiophene-1,1-dioxide

HRID 846313

Reaktionsgleichung

Reaktionsgleichung von HRID 846313
[S:1]1([CH2:7][CH:6]=[CH:5][CH2:4]1)(=[O:3])=[O:2].[S:8]1[CH:12]=[CH:11][CH:10]=[C:9]1[CH:13]=O.[OH-].[Na+]>C(O)C>[S:8]1[CH:12]=[CH:11][CH:10]=[C:9]1[CH:13]=[C:4]1[CH:5]=[CH:6][C:7](=[CH:13][C:9]2[S:8][CH:12]=[CH:11][CH:10]=2)[S:1]1(=[O:3])=[O:2]

Komponenten

5

Edukt 3

HCID 64983-SulfoleneHCID 73642-ThiophenecarboxaldehydeHCID 14798Sodium Hydroxide

Produkt 1

HCID 542425112,5-Bis-(2-thienylmethylidene)-2,5-dihydrothiophene-1,1-dioxide

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

About 80 mmol (9.4 g) of 3-sulfolene (MW=118) and 170 mmol (19.04 g) (15.9 ml) of thiophene-2-aldehyde (MW=112, d=1.2 g/cm3) were added to an alkaline solution of 1 g of NaOH in 200 ml of ethanol. The mixture was stirred at room temperature for 3 days. A yellow precipitate formed which was filtered off with suction and washed thoroughly with ethanol and water.

Aufarbeitung

  1. customA yellow precipitate formed which
  2. filtrationwas filtered off with suction
  3. washwashed thoroughly with ethanol and water

Quellen und Nachweise

ORD-Eintrag
ord-1c152395b68b4d80b0723a6aefee57f6
Quelldatensatz
uspto-grants-1992_08
Patentnummer
US05136049

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