HuagongsheHuagongshe Chemistry Print Report · For research reference only
Orcinol → 1,2-dihydro-9-hydroxy-7-methyl-4-oxo-4H-thieno[2,3-c][1]benzopyran
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Orcinol | HCID 10436 | — |
| Reactant | 2-Thiophenecarboxylic acid, tetrahydro-3-oxo-, methyl ester | HCID 102870 | — |
| Product | 1,2-dihydro-9-hydroxy-7-methyl-4-oxo-4H-thieno[2,3-c][1]benzopyran | HCID 21433872 | — |
Reaction Steps
Following the procedure similar to that described in Example 1B hereinabove, methyl 3-oxo-2,3,4,5-tetrahydrothiophene-2-carboxylate is reacted with 5-methylresorcinol to give 1,2-dihydro-9-hydroxy-7-methyl-4-oxo-4H-thieno[2,3-c][1]benzopyran.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03940421 |
| Source dataset | uspto-grants-1976_02 |
| ORD ID | ord-0145fb8db3a8411c8f9a440eaa347935 |
| Source note | uspto-grants-1976_02 |