Cobalt-Catalyzed Direct C(sp2)-H Alkylation with Unactivated Alkenes was written by Kim, Ye Lim;Park, Sun-a;Kim, Ju Hyun. And the article was included in European Journal of Organic Chemistry in 2020.Quality Control of 2-(m-Tolyl)pyridine This article mentions the following:
A facile and efficient method for Cp*CoIII-catalyzed C(sp2)-H bond alkylation was developed using 2-aryl pyridines and unactivated alkenes. The reaction proceeded atom-economically with readily available styrene derivatives and an abundant cobalt catalyst. This reaction tolerates a broad range of functional groups, directing groups, styrenes and affords mono-diarylethane products with high linear selectivity. To demonstrate the synthetic utility and the potential application in organic synthesis, a gram-scale reaction and further C-H bond functionalizations of the mono-alkylated product were performed. In the experiment, the researchers used many compounds, for example, 2-(m-Tolyl)pyridine (cas: 4373-61-9Quality Control of 2-(m-Tolyl)pyridine).
2-(m-Tolyl)pyridine (cas: 4373-61-9) belongs to pyridine derivatives. Pyridine has a dipole moment and a weaker resonant stabilization than benzene (resonance energy 117 kJ·mol−1 in pyridine vs. 150 kJ·mol−1 in benzene). Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Quality Control of 2-(m-Tolyl)pyridine