HuagongsheHuagongshe Chemistry Print Report · For research reference only
Acetic Anhydride → 1-Nitro-5-methyl-6-acetyl-5,6-dihydropyrazolo[1,5-c]quinazoline
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Acetic Anhydride | HCID 7918 | — |
| Reactant | 1-Nitro-5-methyl-5,6-dihydropyrazolo[1,5-c]quinazoline | HCID 135737781 | — |
| Solvent | Water | HCID 962 | — |
| Product | 1-Nitro-5-methyl-6-acetyl-5,6-dihydropyrazolo[1,5-c]quinazoline | HCID 13175675 | 83% |
Reaction Steps
22.9 g (0.1 mole) of 1-nitro-5-methyl-5,6-dihydropyrazolo[1,5-c]quinazoline is boiled with 120 ml of acetic anhydride for 1 hour, then the solution obtained is poured into water. The product that solidifies is filtered off, washed with water and dried. Thus, 25.0 g (83%) of 1-nitro-5-methyl-6-acetyl-5,6-dihydropyrazolo[1,5-c]quinazoline are obtained. M.p.: 149°-150° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04303660 |
| Source dataset | uspto-grants-1981_12 |
| ORD ID | ord-5b8cc25e407e422ead6cdcd3255a6800 |
| Source note | uspto-grants-1981_12 |