Conformationally stable 1-substituted 1-methyl-4-t-butyl-1-silacyclohexanes, a new organosilicon system suitable for stereochemical studies.

Ten 1-methyl-4-t-butyl-1-silacyclohexyl derivatives (C10H21Si–X, X=H, Cl, OCH(CH3)2, OCH3, OC(CH3)3, C6H5, p-Br–C6H4, p-Cl–C6H4, Si(CH3)2H, F) were synthesized and separated into conformationally stable cis and trans isomers. The stereochemistry of these compounds has been determined on the basis of NMR and GLC. They were found to behave stereochemically like acyclic optically active silanes.