HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → HCID 15578400, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | HCID 15578398 | HCID 15578398 | — |
| Solvent | 1,4-Dioxane | HCID 31275 | — |
| Product | HCID 15578400 | HCID 15578400 | — |
Reaction Steps
A solution of ethyl 5-hydroxy-6-(4-methoxyphenyl)-4-oxo-4H-pyran-2-carboxylate (2.6 g), prepared as described in Example 47, in dioxan (30 ml) and concentrated hydrochloric acid (20 ml) was heated on a steam bath for 2 hours. The solid product was recrystallised from ethanol to give the title product (mp 258°-260° C. with decomposition).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04471129 |
| Source dataset | uspto-grants-1984_09 |
| ORD ID | ord-e147c676f34747669f0695c5d0c4302b |
| Source note | uspto-grants-1984_09 |