HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrogen Bromide → 3,4-Dihydroxy-5-nitrophenyl 3-pyridyl ketone hydrobromide
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrogen Bromide | HCID 260 | — |
| Reactant | 4-Hydroxy-3-methoxy-5-nitrophenyl 3-pyridyl ketone | HCID 21459163 | — |
| Product | 3,4-Dihydroxy-5-nitrophenyl 3-pyridyl ketone hydrobromide | HCID 21459011 | — |
Reaction Steps
3.5 g of 4-hydroxy-3-methoxy-5-nitrophenyl 3-pyridyl ketone dissolved in 70 ml of 48 percent aqueous hydrobromic acid are stirred at 100° for 18 hours. The reaction mixture is subsequently evaporated under reduced pressure. The residue is recrystallized from water. There is obtained 3,4-dihydroxy-5-nitrophenyl 3-pyridyl ketone hydrobromide of m.p. 265°.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05705703 |
| Source dataset | uspto-grants-1998_01 |
| ORD ID | ord-97799c6c1c4641f7b80021b8e6d1ae33 |
| Source note | uspto-grants-1998_01 |