HuagongsheHuagongshe Chemistry Print Report · For research reference only
Thiophene-3,4-dicarboxylic acid → 1H,3H-Thieno[3,4-c]furan-1,3-dione
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Thiophene-3,4-dicarboxylic acid | HCID 255853 | — |
| Solvent | Acetic Anhydride | HCID 7918 | — |
| Product | 1H,3H-Thieno[3,4-c]furan-1,3-dione | HCID 315608 | 98% |
Reaction Steps
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.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05386036 |
| Source dataset | uspto-grants-1995_01 |
| ORD ID | ord-606ee7117db8452a930878c7e26b9fdd |
| Source note | uspto-grants-1995_01 |