HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → 5,7-Dihydroxy-4-methyl-3-(2-phenylethyl)-2H-1-benzopyran-2-one
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Phloroglucinol | HCID 359 | — |
| Reactant | Ethyl 3-oxo-2-(2-phenylethyl)butanoate | HCID 219459 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 5,7-Dihydroxy-4-methyl-3-(2-phenylethyl)-2H-1-benzopyran-2-one | HCID 23500366 | — |
Reaction Steps
A solution of phloroglucinol (0.87 g) and ethyl 2-(2-phenylethyl)-acetoacetate (1.62 g) in ethanol (30 ml) was treated with dry HCl as described in example 1a. Yield: 1.77 g (87%). Melting point 248-252° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06538022B1 |
| Source dataset | uspto-grants-2003_03 |
| ORD ID | ord-ee8e95704a184465b581c2053f0acdb6 |
| Source note | uspto-grants-2003_03 |