Photoinduced Ligand-to-Metal Charge Transfer Enables Photocatalyst-Independent Light-Gated Activation of Co(II)
作者:Benjamin D. Ravetz、Jason Y. Wang、Kyle E. Ruhl、Tomislav Rovis
DOI:10.1021/acscatal.8b04326
日期:2019.1.4
Photoredox catalysis can be used to manipulate the redox state of a transition metal complex leading to the desired reactivity. While powerful, obviating the role of the second catalyst would be attractive from the perspective of simplifying the protocol and using visible light to uncover unexpected, enabling reactivity. Herein we report that Co-acetylides, formed in situ, are photoactive complexes
光氧化还原催化可用于操纵过渡金属络合物的氧化还原状态,从而产生所需的反应性。尽管功能强大,但从简化方案和使用可见光发现意想不到的,可实现反应性的角度来看,消除第二种催化剂的作用将是有吸引力的。在本文中,我们报道原位形成的共乙酰化物是光敏复合物,使用可见光进行配体到金属的电荷转移。净转化过程使用空气稳定的Co(II)络合物作为预催化剂,并诱导Co(I)化学。乙炔是形成Co(I)的电子库,但在催化循环结束时接受电子。取决于电子器件,乙炔的电子性质会导致开关行为或仅引发催化作用。