catalyzed by readily available copper complexes at room temperature. The employment of mesitylcopper(I) and electron-rich phosphine bidentate ligand is a key factor affecting reactivity. The reaction allows various aromatic hydrazones to react with diverse conjugated compounds to produce 1,4-adducts in yields of about 20 to 99%.
铜催化的共轭加成是形成新碳-碳键的经典方法。然而,
铜从未在腙
化学中显示出对umpolung 碳负离子的催化活性。在此,我们报告了在室温下由容易获得的
铜配合物催化的腙的轻松共轭加成。甲基
铜(I)和富电子膦双齿
配体的使用是影响反应性的关键因素。该反应允许各种芳族腙与各种共轭化合物反应,以约 20% 至 99% 的产率生成 1,4-加合物。