Alkynes are widely used in chemistry, medicine and materials science. Here we demonstrate a transition-metal and photocatalyst-free inverse Sonogashira coupling reaction between iodoalkynes and (hetero)arenes or alkenes under visible-light irradiation. Mechanistic and computational studies suggest that iodoalkynes can be directly activated by visible light irradiation, and an excited state iodoalkyne
炔烃广泛用于
化学、医学和材料科学。在这里,我们展示了在可见光照射下
碘代
炔烃和(杂)
芳烃或
烯烃之间的过渡
金属和无光
催化剂的反向 Sonogashira 偶联反应。机理和计算研究表明,
碘代
炔烃可以通过可见光照射直接活化,激发态的
碘代
炔烃作为“炔基自由基合成等效物”,与一系列 C(sp 2 )-H 键反应生成偶联产物。这项工作将为自由基
化学和炔基化方法打开新的窗口。