Sequential functionalisation of 2-aryl-4-chloro-3-iodoquinolines via palladium–catalysed cross-coupling with phenylboronic acid followed by displacement of the 4-chloro atom from the resulting 2,3-diaryl-4-chloroquinolines with methoxide ion yielded 2,3-diaryl-4-methoxyquinolines. The latter were also prepared via Suzuki–Miyaura cross-coupling of 2-aryl-3-iodo-4-methoxyquinolines with phenylboronic acid. Demethylation of the methoxy compounds (BBr3) gave the 2,3-diaryl-4(1 H)-quinolinones.
通过
钯催化与苯
硼酸的交叉偶联,对 2-芳基-
4-氯-3-碘喹啉进行顺序官能化,然后用甲氧基离子置换生成的 2,3-二芳基-
4-氯喹啉中的 4-
氯原子,得到 2,3-二芳基-
4-甲氧基喹啉。后者也是通过 2-芳基-3-
碘-
4-甲氧基喹啉与苯
硼酸的 Suzuki-Miyaura 交叉偶联制备的。甲氧基化合物(BBr3)脱甲基后得到 2,3-二芳基-4(1H)-
喹啉酮。