Li, Laiqiang; Hou, Zhong-Wei; Li, Pinhua; Wang, Lei published their research in Organic Letters in 2021. The article was titled 《Site-Selective Electrochemical C-H Cyanation of Indoles》.Application In Synthesis of Tris(4-bromophenyl)amine The article contains the following contents:
An electrochem. approach for the site-selective C-H cyanation of indoles to form indole-carbonitriles I [R1 = CN, Ph; R2 = Me, CN, C(O)OMe, etc.; R3 = H, 4-Me, 5-F, 6-Cl, etc.; R4 = Me, Bn, i-Pr, etc.] employing readily available TMSCN as cyano source has been developed. The electrosynthesis relied on the tris(4-bromophenyl)amine as a redox catalyst, which achieved better yield and regioselectivity. A variety of C2- and C3-cyanated indoles were obtained in satisfactory yields. The reactions were conducted in a simple undivided cell at room temperature and obviated the need for transition-metal reagent and chem. oxidant.Tris(4-bromophenyl)amine(cas: 4316-58-9Application In Synthesis of Tris(4-bromophenyl)amine) was used in this study.
In other references, Tris(4-bromophenyl)amine(cas: 4316-58-9) is often used in the synthesis of porous luminescent covalent–organic polymers (COPs)Application In Synthesis of Tris(4-bromophenyl)amine
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary