Dual Benzophenone/Copper‐Photocatalyzed Giese‐Type Alkylation of C(sp
<sup>3</sup>
)−H Bonds
作者:Baptiste Abadie、Damien Jardel、Gianluca Pozzi、Patrick Toullec、Jean‐Marc Vincent
DOI:10.1002/chem.201904111
日期:2019.12.13
benzophenone (BP) with a catalytic amount of Cu(OAc)2 . Under mild and operationally simple conditions, the Giese adducts resulting from the C(sp3 )-Hfunctionalization of amines, alcohols, ethers, and cycloalkanes could be synthesized. Preliminary mechanistic studies have revealed that the reaction does not proceed through a radical chain, but through a dual BP/Cu photocatalytic process, in which both CuII
Paul; Tchelitcheff, Bulletin de la Societe Chimique de France, 1954, p. 672,674
作者:Paul、Tchelitcheff
DOI:——
日期:——
Copper Catalyzed C(sp<sup>3</sup>)–H Bond Alkylation via Photoinduced Ligand-to-Metal Charge Transfer
作者:Sean M. Treacy、Tomislav Rovis
DOI:10.1021/jacs.1c00687
日期:2021.2.24
(0.5 V vs SCE) and that a proposed protodemetalation mechanism offers a broad scope of electron-deficient olefins, offering high diastereoselectivity in the case of endocyclic alkenes. The coupling of chlorine radical generation with Cu reduction through LMCT enables the generation of a highly active HAT reagent in an operationally simple and atom economical protocol.
我们利用催化 CuCl 2报告了通过未活化的 C(sp 3 )-H 键与缺电子烯烃的偶联对许多原料化学品的功能化。活性铜酸盐催化剂经历配体到金属电荷转移 (LMCT) 以产生氯自由基,该氯自由基充当强大的氢原子转移试剂,能够提取强富电子 C(sp 3)–H 键。值得注意的是,氯铜酸盐催化剂是一种非常温和的氧化剂(0.5 V vs SCE),并且提出的原型脱金属机制提供了广泛的缺电子烯烃,在环烯烃的情况下提供了高非对映选择性。通过 LMCT 将氯自由基生成与 Cu 还原相结合,能够以操作简单且原子经济的方案生成高活性 HAT 试剂。