Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|
| Edukt | Acetic Anhydride | HCID 7918 | — |
| Edukt | Furo[3,4-b]pyridine-5,7-dione | HCID 69688 | — |
| Edukt | N,N-Diethyl-m-phenetidine | HCID 74625 | — |
| Edukt | 1H-Indole, 2-methyl-1-octyl- | HCID 170708 | — |
| Katalysator | Zincchloride | HCID 3007855 | — |
| Lösungsmittel | Acetic Acid | HCID 176 | — |
| Produkt | furo(3,4-b)pyridin-5(7H)-one | HCID 819439 | 303,5% |
Reaktionsschritte
6.0 g of quinolinic anhydride, 9.5 g of N-octyl-2-methylindole and 0.56 g of zinc chloride are stirred in 30 ml of glacial acetic acid at 20° C. for 5 hours. 6.6 g of 3-diethylaminophenetole and 8 ml of acetic anhydride are then added, after which the mixture is stirred at 50° C. for 21/2 hours. The product is precipitated with 30% aqueous ammonia, separated from the aqueous phase and recrystallised from isopropanol, affording 16.5 g of the isomer-free 4-azaphthalide compound of the formula ##STR16## of melting point 113°-118° C.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patentnummer | US04587539 |
|---|
| Quelldatensatz | uspto-grants-1986_05 |
|---|
| ORD ID | ord-3aea14e105664764a1ddfa9feaffda81 |
|---|
| Quellennotiz | uspto-grants-1986_05 |
|---|
