HuagongsheHuagongshe Chemistry Print Report · For research reference only
Olivetol → 1,2-dihydro-2,2-dimethyl-9-hydroxy-7-n-pentyl-4-oxo-4H-thieno-[2,3-c][1] benzopyran
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Olivetol | HCID 10377 | — |
| Reactant | Ethyl 5,5-dimethyl-3-oxothiolane-2-carboxylate | HCID 12716257 | — |
| Product | 1,2-dihydro-2,2-dimethyl-9-hydroxy-7-n-pentyl-4-oxo-4H-thieno-[2,3-c][1] benzopyran | HCID 21553565 | 72.5% |
Reaction Steps
Ethyl 5,5-dimethyl-3-oxo-tetrahydrothiophene-2-carboxylate was reacted with 5-n-pentyl resorcinol following a procedure similar to that of Example 3-C to produce 1,2-dihydro-2,2-dimethyl-9-hydroxy-7-n-pentyl-4-oxo-4H-thieno-[2,3-c][1] benzopyran in a 72.5% yield, m.p. 203°-206°C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03946111 |
| Source dataset | uspto-grants-1976_03 |
| ORD ID | ord-8469ca5d080e4fddb719895d1063a686 |
| Source note | uspto-grants-1976_03 |