Arylation of aryllithiums with S-arylphenothiazinium ions for biaryl synthesis was written by Morofuji, Tatsuya;Yoshida, Tatsuki;Tsutsumi, Ryosuke;Yamanaka, Masahiro;Kano, Naokazu. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2020.SDS of cas: 162258-89-1 This article mentions the following:
Herein, arylation of aryllithiums ArLi (Ar = Ph, 4-MeOC6H4, 1-naphthyl, etc.) with S-arylphenothiazinium ions I (R1 = H, 4-Br, 4-t-Bu, etc.) through selective ligand coupling of intermediary sulfuranes is reported. Various unsym. biaryls II (R1 = H, 4-Br, 4-SMe, etc.; R2 = H, 4-Cl, 4-I, etc.) could be obtained without transition-metal catalysis. In the experiment, the researchers used many compounds, for example, 4-Bromo-4′-tert-butylbiphenyl (cas: 162258-89-1SDS of cas: 162258-89-1).
4-Bromo-4′-tert-butylbiphenyl (cas: 162258-89-1) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.SDS of cas: 162258-89-1
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary