HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
Thiophene-3,4-dicarboxylic acid → 1H,3H-Thieno[3,4-c]furan-1,3-dione
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | Thiophene-3,4-dicarboxylic acid | HCID 255853 | — |
| Lösungsmittel | Acetic Anhydride | HCID 7918 | — |
| Produkt | 1H,3H-Thieno[3,4-c]furan-1,3-dione | HCID 315608 | 98% |
Reaktionsschritte
Thiophene-3,4-dicarboxylic acid (12 g, 0.07 mol) is dissolved in acetic anhydride (60 ml) and boiled for 2.5 hours. The mixture is then concentrated to dryness. There is obtained 10.55 g (98%) of thiophene-3,4-dicarboxylic anhydride (m.p. 147°-149° C.).
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US05258357 |
| Quelldatensatz | uspto-grants-1993_11 |
| ORD ID | ord-be1403e1a2dd4ec49ad740b2845098a4 |
| Quellennotiz | uspto-grants-1993_11 |