A regioselective ytterbium-catalyzed annulation reaction between ethylglyoxalate, anilines and silyl-alkynes bearing selenyl- and telluryl-moieties for the formation of poly-substituted quinolones is described. A series of examples formed under mild conditions are presented, including a scaled-up reaction and a study on catalyst recyclability.
描述了
乙二醛酸
乙二酸酯,
苯胺和带有
硒烯基和
碲基部分的甲
硅烷基
炔烃之间的区域选择性催化的环化反应,用于形成多取代的
喹诺酮。提出了在温和条件下形成的一系列实例,包括放大反应和研究催化剂的可回收性。