A divergent regioselective palladium (II) catalyzed approach through post Ugi cyclization is described. The Ugi adduct underwent intramolecular ortho-hydroarylation via 6-endo-dig cyclization for the direct access to 4-aryl-2-quinolones. Incorporation of iodine at the C-3 position of 2-quinolone followed by Suzuki-Miyaura coupling results into the more diversified 3,4-diaryl-2-quinolones.
描述了通过后Ugi环化的不同区域选择性
钯(II)催化方法。Ugi加合物通过6-内切-环化作用进行分子内邻氢芳基化反应,以直接获得4-芳基-2-
喹诺酮。
碘在2-
喹诺酮的C-3位置掺入,然后通过铃木-宫浦偶合产生更多样化的3,4-二芳基-2-
喹诺酮。