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The efficient catalysis of oxidative alkylation and fluoroalkylation of aromatic C–H bonds is of paramount importance in the pharmaceutical and agrochemical industries, and requires the development of convenient Ag0-based nano-architectures with high catalytic activity and recyclability. We prepared Ag-doped silica nanoparticles (Ag0/+@SiO2) with a specific nano-architecture, where ultra-small sized silver cores are immersed in silica spheres, 40 nm in size. The nano-architecture provides an efficient electrochemical oxidation of Ag+@SiO2 without any external oxidant. In turn, Ag+@SiO2 5 mol% results in 100% conversion of arenes into their alkylated and fluoroalkylated derivatives in a single step at room temperature under nanoheterogeneous electrochemical conditions. Negligible oxidative leaching of silver from Ag0/+@SiO2 is recorded during the catalytic coupling of arenes with acetic, difluoroacetic and …
Royal Society of Chemistry
Publication date: 
1 Jan 2018

Mikhail N Khrizanforov, Svetlana V Fedorenko, Asiya R Mustafina, Kirill V Kholin, Irek R Nizameev, Sofia O Strekalova, Valeriya V Grinenko, Tatiana V Gryaznova, Rustem R Zairov, Raffaello Mazzaro, Vittorio Morandi, Alberto Vomiero, Yulia H Budnikova

Biblio References: 
Volume: 47 Issue: 29 Pages: 9608-9616
Dalton Transactions