HuagongsheHuagongshe Chemistry Print Report · For research reference only
2,3-Diaminonaphthalene → Benzo(g)quinoxalin-2(1H)-one, 3-(3,4-dihydroxy-5-nitrophenyl)-
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 2,3-Diaminonaphthalene | HCID 69872 | — |
| Reactant | Benzeneacetic acid, 3,4-dihydroxy-5-nitro-alpha-oxo-, hexyl ester | HCID 5747978 | — |
| Solvent | Methanol | HCID 887 | — |
| Solvent | 1-Hexanol | HCID 8103 | — |
| Product | Benzo(g)quinoxalin-2(1H)-one, 3-(3,4-dihydroxy-5-nitrophenyl)- | HCID 135624013 | — |
Reaction Steps
A solution of 1.07 g of n-hexyl 3,4-dihydroxy-5-nitrophenylglyoxylate and 696.3 mg of 2,3-diaminonaphthalene in 3 ml of 1-hexanol is heated to boiling under reflux for 3 hours. The reaction mixture is then cooled and diluted with methanol. The crude product is filtered under suction and recrystallized from N,N-dimethylformamide/water. There is obtained 3-(3,4-dihydroxy-5-nitrophenyl)benzo[g]quinoxalin-2(1H)-one of m.p. >300°.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05705703 |
| Source dataset | uspto-grants-1998_01 |
| ORD ID | ord-a8ac8e0b4ad94140a818b648ff690a0e |
| Source note | uspto-grants-1998_01 |