HuagongsheHuagongshe Chemistry Print Report · For research reference only
5-Bromofuran-2-carbaldehyde → 1-(5-Bromofurfurylideneamino)-2,3-dioxo-piperazine
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 5-Bromofuran-2-carbaldehyde | HCID 600328 | — |
| Reactant | 1-Aminopiperazine-2,3-dione | HCID 22184768 | — |
| Solvent | Acetic Acid | HCID 176 | — |
| Product | 1-(5-Bromofurfurylideneamino)-2,3-dioxo-piperazine | HCID 53821497 | 38.5% |
Reaction Steps
1.9 pts. by wt. of 5-bromofurfural, 1.3 pts. by wt. of 1-amino-2,3-dioxo-piperazine and 7 pts. by vol. of glacial acetic acid were warmed to 90° for 10 minutes and then left for 30 minutes at RT. The precipitate is filtered off, washed with 3 pts. by vol. of glacial acetic acid and recrystallised from dimethylformamide, with the addition of animal charcoal. 1.1 pts. by wt. (38.5%) of 1-(5-bromofurfurylideneamino)-2,3-dioxo-piperazine are obtained as yellowish crystals of decomp. pt. 220°.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04182762 |
| Source dataset | uspto-grants-1980_01 |
| ORD ID | ord-cb56760e2339460492f6caaafb119889 |
| Source note | uspto-grants-1980_01 |