HuagongsheHuagongshe Chemistry Print Report · For research reference only
Ammonia → 4-oxo-5-phenyl-4H-pyran-2-carboxamide
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Ammonia | HCID 222 | — |
| Reactant | Ethyl 4-oxo-5-phenyl-4H-pyran-2-carboxylate | HCID 13091198 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 4-oxo-5-phenyl-4H-pyran-2-carboxamide | HCID 13091176 | — |
Reaction Steps
Concentrated ammonia solution (40 ml) was added to a stirred suspension of ethyl 4-oxo-5-phenyl-4H-pyran-2-carboxylate (4.8 g) in ethanol (40 ml) at 10°-15° C. The mixture was then stirred for 30 minutes at 10°-15° C. Then the solid product was recrystallised from dimethylformamide-ethanol to give 4-oxo-5-phenyl-4H-pyran-2-carboxamide (mp 245°-248° with decomposition).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04364956 |
| Source dataset | uspto-grants-1982_12 |
| ORD ID | ord-8aea5cde7832434b99fa700cf908ebf1 |
| Source note | uspto-grants-1982_12 |