HuagongsheHuagongshe Chemistry Print Report · For research reference only
Sodium Hydroxide → HCID 12724768, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Sodium Hydroxide | HCID 14798 | — |
| Reactant | HCID 12724763 | HCID 12724763 | — |
| Solvent | Methanol | HCID 887 | — |
| Product | HCID 12724768 | HCID 12724768 | — |
Reaction Steps
From 3.5 g of 4,9-dihydro-4,7-dimethyl-9-oxo-pyrazolo[5,1-b]quinazoline-2-carboxylic acid, ethyl ester, 50 ml of 1 N aqueous sodium hydroxide and 200 ml of methanol, following the procedure of Example 14, there is obtained 4,9-dihydro-4,7-dimethyl-9-oxo-pyrazolo[5,1-b]quinazoline-2-carboxylic acid; mp 269° C., after crystallization from dimethylformamide/ ethanol.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04261997 |
| Source dataset | uspto-grants-1981_04 |
| ORD ID | ord-c78049a320334c78b5e45bf35ce4618a |
| Source note | uspto-grants-1981_04 |