The author of 《Copper-catalyzed versatile C(sp3)-H arylation: synthetic scope and regioselectivity investigations》 were Zhou, Jiadi; Zou, Yawen; Zhou, Peng; Chen, Zhiwei; Li, Jianjun. And the article was published in Organic Chemistry Frontiers in 2019. Synthetic Route of C6H4N2 The author mentioned the following in the article:
The copper-catalyzed versatile C(sp2)-C(sp3) bond formation with N-heteroaromatics and hydrogen donors was developed. Various alkanes and ethers reacted with quinolines, isoquinolins, pyridines, benzooxazole and benzothiazole to gave the corresponding C(sp2)-H alkylation products via cross-dehydrogenative coupling. The high regioselective C(sp2)-halogen alkylation of (hetero)aryl chlorides and (hetero)aryl bromides with ethers via elimination of the halogen radical. The reaction mechanism was investigated with control experiments The experimental process involved the reaction of 4-Cyanopyridine(cas: 100-48-1Synthetic Route of C6H4N2)
4-Cyanopyridine(cas: 100-48-1) belongs to pyridine. Pyridines form stable salts with strong acids. Pyridine itself is often used to neutralize acid formed in a reaction and as a basic solvent. Synthetic Route of C6H4N2