HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
2,3-Diaminonaphthalene → Benzo(g)quinoxalin-2(1H)-one, 3-(3,4-dihydroxy-5-nitrophenyl)-
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | 2,3-Diaminonaphthalene | HCID 69872 | — |
| Edukt | Benzeneacetic acid, 3,4-dihydroxy-5-nitro-alpha-oxo-, hexyl ester | HCID 5747978 | — |
| Lösungsmittel | Methanol | HCID 887 | — |
| Lösungsmittel | 1-Hexanol | HCID 8103 | — |
| Produkt | Benzo(g)quinoxalin-2(1H)-one, 3-(3,4-dihydroxy-5-nitrophenyl)- | HCID 135624013 | — |
Reaktionsschritte
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°.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US05705703 |
| Quelldatensatz | uspto-grants-1998_01 |
| ORD ID | ord-a8ac8e0b4ad94140a818b648ff690a0e |
| Quellennotiz | uspto-grants-1998_01 |