Hydrosilation Magnesium

Jander, W., and J. Wurhrer (1938). Hydrothermal reactions (I) Formation of magnesium hydrosilicates. Zeit. Anorg u allgem Chemie 235 273-294. Jefferson, D. A., L. G. Hallinson, J. L. Hutchison, and J. M. Thomas (1976). Structural irregularities in nephrite jade an electron microscope study. Mater. Res. Bull. 11 1557-1562. 

The novel spirosilane (48) can be elegantly prepared in a two-step synthesis which combines both of the general routes described above. Hydrosilation gives the y-chloropropylsilane which is then cyclized with magnesium (Scheme 62) (71DOK(198)112). 

Silacyclohex-2-enes are conveniently made through the formation of l-trichlorosilyl-5-chloro-l-pentene by hydrosilation, followed by CyClization using magnesium (Scheme 230) (65JOM(4)284). The Diels-Alder addition of silenes to 1,3-dienes provides a useful route to the isomeric silacyclohex-3-enes (Scheme 231) (79CR529). 

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