HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → 4-Oxo-5-phenyl-4H-pyran-2-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Ethyl 4-oxo-5-phenyl-4H-pyran-2-carboxylate | HCID 13091198 | — |
| Product | 4-Oxo-5-phenyl-4H-pyran-2-carboxylic acid | HCID 13091161 | — |
Reaction Steps
Ethyl 4-oxo-5-phenyl-4H-pyran-2-carboxylate (4.9 g) was heated with concentrated hydrochloric acid (12 ml) on a steam bath for 11/2 hours. The mixture was cooled and the solid title product was recrystallised from ethyl acetate-dimethylformamide (mp 225°-227° C. with decomposition).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04364956 |
| Source dataset | uspto-grants-1982_12 |
| ORD ID | ord-36ff2856ffc34546ab9ae5748c545023 |
| Source note | uspto-grants-1982_12 |