HuagongsheHuagongshe Chemistry Print Report · For research reference only
Ethyl Acetate → rac-3,4-Dihydro-2-[(4-hydroxy-3-propylphenyl)ethynyl]-2,5,7,8-tetramethyl-2H-1-benzopyran-6-ol
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Ethyl Acetate | HCID 8857 | — |
| Reactant | rac-3,4-dihydro-2-ethynyl-2,5,7,8-tetramethyl-2H-1-benzopyran-6ol | HCID 14478563 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | rac-3,4-Dihydro-2-[(4-hydroxy-3-propylphenyl)ethynyl]-2,5,7,8-tetramethyl-2H-1-benzopyran-6-ol | HCID 15171853 | — |
Reaction Steps
This compound was obtained by reacting rac-3,4-dihydro2-ethynyl-2,5,7,8-tetramethyl-2H-1-benzopyran-6-ol with 4-iodo-2-propylphenyl under the conditions described in Example 1. The product was isolated by chromatography over the 40 fold amount of silica gel using 10% (V/V) of ethyl acetate in methylene chloride. It was crystallized from ether/hexane to give off-white crystals with m.p. 154°-156°.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05132310 |
| Source dataset | uspto-grants-1992_07 |
| ORD ID | ord-f8e5b06e666b42ba8f9efe5f5e73832c |
| Source note | uspto-grants-1992_07 |