HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrogen Bromide → HCID 178524064, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrogen Bromide | HCID 260 | — |
| Reactant | HCID 178488821 | HCID 178488821 | — |
| Solvent | Acetic Acid | HCID 176 | — |
| Product | HCID 178524064 | HCID 178524064 | 76.2% |
Reaction Steps
From 4,9-dihydro-5-methoxy-9-oxo-pyrazolo[5,1-b]-quinazoline-2-carboxylic acid (1.04 g), 48% hydrobromic acid (25 ml) and acetic acid (25 ml), following the procedure of Example 3, there is obtained the desired product (0.75 g) as the quarter hydrate. mp 326°-330° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04261996 |
| Source dataset | uspto-grants-1981_04 |
| ORD ID | ord-dc2511dab781464eb537ad4dc6b72c80 |
| Source note | uspto-grants-1981_04 |