HuagongsheHuagongshe Chemistry Print Report · For research reference only
Cinchomeronic acid → 1H,3H-furo(3,4-c)pyridine-1,3-dione
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Cinchomeronic acid | HCID 10273 | — |
| Solvent | Acetic Anhydride | HCID 7918 | — |
| Product | 1H,3H-furo(3,4-c)pyridine-1,3-dione | HCID 278398 | 75.5% |
Reaction Steps
A mixture of 3,4-pyridine-dicarboxylic acid (15 g) and acetic anhydride (30 ml) is refluxed for 2 hours. The acetic anhydride in excess is distilled off and the residue is purified by sublimation (123° C. at 3 mmHg) to give 10.1 g of 3,4-pyridine-dicarboxylic acid anhydride, a white solid, m.p. 74-76° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06034092 |
| Source dataset | uspto-grants-2000_03 |
| ORD ID | ord-295789ffbf0143ab9a2269b289a48499 |
| Source note | uspto-grants-2000_03 |