A chemoselective and robust protocol for the γ-oxidation of β,γ-unsaturated amides is reported. In this method, electrophilic amide activation, in a rare application to unsaturated amides, enables a regioselective reaction with TEMPO resulting in the title products. Radical cyclisation reactions and oxidation of the synthesised products highlight the synthetic utility of the products obtained.
报道了一种用于 β,γ-不饱和酰胺的 γ-氧化的化学选择性和稳健的方案。在这种方法中,亲电酰胺活化(在罕见的不饱和酰胺应用中)能够与 TEMPO 进行区域选择性反应,从而产生标题产物。合成产物的自由基环化反应和氧化突出了所得产物的合成效用。
Nickel‐Catalyzed Thermal Redox Functionalization of C(sp
<sup>3</sup>
)−H Bonds with Carbon Electrophiles**
作者:Yuxin Gong、Lei Su、Zhaodong Zhu、Yang Ye、Hegui Gong
DOI:10.1002/anie.202201662
日期:2022.5.23
Under thermal conditions, nickel-catalyzed C(sp3)−Hredoxfunctionalization with carbonelectrophiles has been advanced to forge value-added C(sp3)−C bonds in good to excellent efficiency. This method emphasizes the use of external Zn as reductant and di-tert-butyl peroxide as an oxidant and shows remarkable compatibility with Ni-catalysis.