Photoinduced Trifluoromethylation of Arenes and Heteroarenes Catalyzed by High‐Valent Nickel Complexes
作者:Shubham Deolka、Ramadoss Govindarajan、Eugene Khaskin、Robert R. Fayzullin、Michael C. Roy、Julia R. Khusnutdinova
DOI:10.1002/anie.202109953
日期:2021.11.8
Nickel complexes with simple naphthyridine ligands undergo facile aerobic oxidation to stable, isolated NiIII organometallic complexes, in which Ni–CF3 bond homolysis is observed upon irradiation with blue LED light. These complexes catalyzephotoinduced C−H bond trifluoromethylation in arenes and heteroarenes.
具有简单萘啶配体的镍配合物容易进行有氧氧化,形成稳定、分离的 Ni III有机金属配合物,其中在蓝色 LED 光照射下观察到Ni-CF 3键均裂。这些配合物催化芳烃和杂芳烃中光诱导的 CH 键三氟甲基化。
Direct C−H Trifluoromethylation of (Hetero)Arenes in Water Enabled by Organic Photoredox‐Active Amphiphilic Nanoparticles
作者:Fabian Eisenreich、Anja R. A. Palmans
DOI:10.1002/chem.202201322
日期:2022.9.16
Photoredox-catalyzed trifluoromethylations of a variety of small organic molecules were studied in water with the aid of amphiphilic polymeric nanoparticles. Excellent recyclability of the nanoparticles, high efficacy and selectivity, and the use of low intensity LED or sunlight render this method versatile and environmentally friendly.
借助两亲性聚合物纳米粒子,研究了水中各种小有机分子的光氧化还原催化的三氟甲基化。纳米颗粒优异的可回收性、高功效和选择性,以及低强度 LED 或阳光的使用,使得该方法具有多功能性和环保性。
Direct Decarboxylation of Trifluoroacetates Enabled by Iron Photocatalysis**
作者:Sara Fernández‐García、Veronika O. Chantzakou、Francisco Juliá‐Hernández
DOI:10.1002/anie.202311984
日期:2024.1.25
Iron photocatalysis enables repurposing inexpensive trifluoroacetates as reagents for the C(sp2)−H trifluoromethylation. Thanks to the complementary inner-sphere electron-transfer pathway, photodecarboxylation occurs under mild conditions and can be applied to complex molecules, including natural products and pharmaceuticals.