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 heated at the boil for 2.5 hours. The mixture is then evaporated to dryness. 10.55 g (98%) of thiophene-3,4-dicarboxylic anhydride (mp. 147° to 149° C.) are obtained.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US05276009 |
| Quelldatensatz | uspto-grants-1994_01 |
| ORD ID | ord-d9e5436240564df6a2c11da402a92143 |
| Quellennotiz | uspto-grants-1994_01 |