The author of 《Sequential Cross-Coupling/Annulation of ortho-Vinyl Bromobenzenes with Aromatic Bromides for the Synthesis of Polycyclic Aromatic Compounds》 were Wei, Dong; Li, Meng-Yao; Zhu, Bin-Bin; Yang, Xiao-Di; Zhang, Fang; Feng, Chen-Guo; Lin, Guo-Qiang. And the article was published in Angewandte Chemie, International Edition in 2019. Electric Literature of C19H18BrP The author mentioned the following in the article:
A sequential cross-coupling/annulation of ortho-vinyl bromobenzenes with aromatic bromides was realized, providing a direct and modular approach to access polycyclic aromatic compounds A vinyl-coordinated palladacycle was proposed as the key intermediate for this sequential process. Excellent chemoselectivity and regioselectivity were observed in this transformation. The practicability of this method is highlighted by its broad substrate scope, excellent functional group tolerance, and rich transformations associated with the obtained products. In addition to this study using Methyltriphenylphosphonium bromide, there are many other studies that have used Methyltriphenylphosphonium bromide(cas: 1779-49-3Electric Literature of C19H18BrP) was used in this study.
Methyltriphenylphosphonium bromide(cas: 1779-49-3) is a lipophilic molecule with a cation allowing for it to be used to deliver molecules to specific cell components. Also considered an antineoplastic agent.Electric Literature of C19H18BrP
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary