HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrogen Bromide → HCID 15572242, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrogen Bromide | HCID 260 | — |
| Reactant | Sodium Bicarbonate | HCID 516892 | — |
| Reactant | 6,8-dimethoxy-3,4-dihydro-2H-naphthalen-1-one | HCID 11447075 | — |
| Solvent | Acetic Acid | HCID 176 | — |
| Product | HCID 15572242 | HCID 15572242 | — |
Reaction Steps
The 6,8-dimethoxy-1-tetralone (3.0 g; 14.0 mmoles) was refluxed overnight with 20 ml of 48% aqueous hydrogen bromide and 20 ml of glacial acetic acid. After cooling to room temperature, the reaction mixture was neutralized with a saturated sodium bicarbonate solution and extracted with ethyl acetate. The combined extracts were dried (brine, magnesium sulfate) and concentrated to afford a red solid which upon trituration with ether gave the desired compound as an off-white solid, 1.77 g (71%); m.p. 209°-210° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04270005 |
| Source dataset | uspto-grants-1981_05 |
| ORD ID | ord-49a1ceb36f894f88b3ca34a9d5ea5215 |
| Source note | uspto-grants-1981_05 |