Nickel-Catalyzed C(sp<sup>2</sup>)–H Borylation of Arenes Arpan Das Pradip Kumar Hota Swadhin K. Mandal 10.1021/acs.organomet.9b00364.s001 https://acs.figshare.com/articles/journal_contribution/Nickel-Catalyzed_C_sp_sup_2_sup_H_Borylation_of_Arenes/9693530 In this study, C­(sp<sup>2</sup>)–H borylation of arenes was accomplished by a nickel catalyst, resulting in good yield. Alkyl and alkoxy arenes were successfully functionalized, affording C­(sp<sup>2</sup>)–H borylated compounds. It was unraveled that the well-defined abnormal N-heterocyclic carbene based Ni­(II) complex breaks into Ni nanoparticles (Ni-NPs), which act as catalytically active species. A series of controlled reactions under stoichiometric conditions along with spectroscopic studies and single-crystal X-ray crystallographic study helped us to understand the formation of Ni-NPs along with formation of a boron­(III) compound during this reaction. 2019-08-20 16:04:20 alkoxy arenes spectroscopic studies stoichiometric conditions N-heterocyclic carbene nickel catalyst compound single-crystal X-ray Ni-NP Ni nanoparticles formation