Synthesis of Six-Membered Silacycles

Progress in synthetic methodology for six-membered silacycles with one silicon atom in the ring is introduced.Six-membered silacycles are synthesized by the following methods: ring closure by silylation of α,ω-dimetallic compounds, cycloaddition reaction involving silenes,ring closure by C—Si bond formation,ring closure by C—C bond formation,ring expansion reaction of smaller silacycles,etc.A variety of silacyclohexane,silacyclohexene and silacyclohexadiene derivatives are readily accessible by these transformations.Further application of six-membered silacycles in organic chemistry and materials science can be envisioned.