Reactions of 1,1-Diphenylethylene and Its Derivatives with Tris(p-bromophenyl)aminium Hexachloroantimonate

Article abstract of DOI:10.1246/cl.1987.2251

Reaction of 1,1-diphenylethylene (1) with (p-BrC6H4)3N*⁺SbCl6^- produced indan dimer 2 in dried solvents and gave a butadiene derivative 7 and a tetrahydrofuran derivative 8 in wet solvents whereas the dimerization of the derivatives of 1 afforded cyclobutane type dimers and butadiene type dimers.