Influence de la taille du cycle sur la substitution électrophile des cycloalkyltriméthylsilanes. Synthèse de cycloalkyldiméthylfluorosilanes

Abstract

Cycloalkyltrimethylsilanes, excepting cyclopropyl-, react with electrophiles by Si—Me bond splitting. Consequently silicon can be functionalized by this route. We also propose a new synthesis of cycloalkyldimethylfluoro (or chloro-)silanes. In the case of five or six member ring derivatives, the observed results are interpreted by a mechanism involving initial abstraction of hydride ion from the silicon substrate.