Phosphorus oxychloride → 2-Chloro-7-(trifluoromethyl)quinoxaline
Reaktionsgleichung
[F:1][C:2]([F:15])([F:14])[C:3]1[CH:12]=[C:11]2[C:6]([N:7]=[CH:8][C:9](=O)[NH:10]2)=[CH:5][CH:4]=1.P(Cl)(Cl)([Cl:18])=O.FC(F)(F)C1C=C2C(=CC=1)NC(=O)C=N2>>[Cl:18][C:9]1[CH:8]=[N:7][C:6]2[C:11](=[CH:12][C:3]([C:2]([F:15])([F:14])[F:1])=[CH:4][CH:5]=2)[N:10]=1Komponenten
4
Versuchsvorschrift
This 7-trifluoromethylquinoxalin-2-one was allowed to react with phosphorus oxychloride (in the same manner as described above for 6-trifluoromethylquinoxalin-2-one) to yield the intermediate 2-chloro-7-trifluoromethylquinoxaline having a melting point of about 119°-120° C. This compound was allowed to react with ammonia, in the manner described above, to yield the 2-amino-7-trifluoromethylquinoxaline, having a melting point of about 192°-194° C., and identified by IR spectrum.