Rapid and Direct Photocatalytic C(sp
<sup>3</sup>
)−H Acylation and Arylation in Flow
作者:Daniele Mazzarella、Antonio Pulcinella、Loïc Bovy、Rémy Broersma、Timothy Noël
DOI:10.1002/anie.202108987
日期:2021.9.20
photocatalytic procedure that enables the acylation/arylation of unfunctionalized alkyl derivatives in flow. The method exploits the ability of the decatungstate anion to act as a hydrogen atom abstractor and produce nucleophilic carbon-centered radicals that are intercepted by a nickel catalyst to ultimately forge C(sp3)−C(sp2) bonds. Owing to the intensified conditions in flow, the reaction time can be reduced
在此,我们报告了一种光催化程序,该程序可以使未官能化的烷基衍生物在流动中酰化/芳基化。该方法利用十钨酸盐阴离子作为氢原子提取物并产生亲核碳中心自由基的能力,这些自由基被镍催化剂拦截以最终形成 C(sp 3 )-C(sp 2 ) 键。由于流动条件的强化,反应时间可以从 12-48 小时减少到仅 5-15 分钟。最后,动力学测量强调了强化条件如何不改变反应机制,而是可靠地加速整个过程。