F. Trecourt et al., SUBSTITUTED 8-METHOXYQUINOLINES - REGIOSELECTIVE BROMINATION, COUPLING REACTIONS AND CYCLIZATION TO AN 11H-INDOLO[3,2-C]QUINOLINE, Synthetic communications, 25(24), 1995, pp. 4011-4024
5,7-Disubstituted 8-methoxyquinolines were brominated at C-3 position.
The palladium-catalyzed cross-coupling of obtained 3-bromoquinolines
with phenylboric acids gave corresponding 3-arylquinolines from which
a substituted 11H-indolo[3,2-c]quinoline could be synthesized.