Synthesis of Dibenzoheteropines of Group 13–16 Elements via Ring-Closing Metathesis

Abstract

The ring-closing metathesis (RCM) of bis­(2-vinylphenyl)­silanes in the presence of the second-generation Hoveyda–Grubbs catalyst in toluene at 100 °C afforded dibenzo­[<i>b</i>,<i>f</i>]­silepines in excellent yields. Other dibenzoheteropines of group 13–16 elements were also prepared via the RCM of the corresponding heteroatom-tethered dienes