C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Coupling of Cycloalkanes and Alkyl Halides via Dual Photocatalytic Hydrogen Atom Transfer and Nickel Catalysis
作者:Ramadevi Pilli、Keerthika Selvam、Bala S. S. Balamurugan、Vidya Jose、Ramesh Rasappan
DOI:10.1021/acs.orglett.4c00567
日期:2024.4.19
Functionalization of C(sp3)–H bonds represents the most straightforward and atom-economical transformation in organic synthesis. An innovative approach integrating photocatalytic hydrogen atom transfer (HAT) and transition metal catalysis has made significant progress in the coupling of α-heterosubstituted C–H bonds with alkyl halides. However, unactivated alkanes were ineffective as a result of the
C(sp 3 )–H 键的官能化代表了有机合成中最直接且最经济的转化。结合光催化氢原子转移(HAT)和过渡金属催化的创新方法在α-杂取代C-H键与卤代烷的偶联方面取得了重大进展。然而,由于大量副产物的形成,未活化的烷烃是无效的。在此,我们证明了环烷烃和苄基溴/伯烷基碘偶联中的直接 HAT 和镍催化作用。此外,十钨酸四丁基铵(TBADT)也被回收和再利用。