Addition of the phenoxathiin cation radical to alkenes and nonconjuagted dienes: formation of (E)- and (Z)-(10-phenoxathiiniumyl)alkenes and (E)- and (Z)-(10-phenoxathiiniumyl)dienes on basic alumina

The study explains the effects of the addition of the phenoxathiin cation radical ([PO.sup.+]) to different acyclic alkenes and nonconjugated dienes in acetonitrile solution (MeCN). The reaction has been found to be very useful for the synthesis of (E)- and (Z)-(10-phenoxathiiniumyl)alkenes and (E)- and (Z)-(10-phenoxathiiniumyl)dienes on basic alumina.