Dimethylformamide → 5-Cyano-2,3-dihydro-3,3-dimethylbenzofuran-2-one
Reaktionsgleichung
Br[C:2]1[CH:3]=[CH:4][C:5]2[O:9][C:8](=[O:10])[C:7]([CH3:12])([CH3:11])[C:6]=2[CH:13]=1.[CH3:14][N:15](C)C=O>>[C:14]([C:2]1[CH:3]=[CH:4][C:5]2[O:9][C:8](=[O:10])[C:7]([CH3:12])([CH3:11])[C:6]=2[CH:13]=1)#[N:15]Komponenten
3
Versuchsvorschrift
5-Bromo-2,3-dihydro-3,3-dimethylbenzofuran-2-one (39.2 g, 0.162 mole) was treated with cuprous cyanide (17.9 g, 0.2 mole) in dimethyl formamide (40 ml) (as in example 2). Recrystallisation (twice) of the product from ethanol yielded 14 g (45%) title product m.p. 138°-140° C.
Aufarbeitung
- customRecrystallisation (twice) of the product from ethanol
Quellen und Nachweise
- ORD-Eintrag
- ord-0752ff598b194c4ab962419e8838d10a
- Quelldatensatz
- uspto-grants-1982_06
- Patentnummer
- US04333759
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