THERMODYNAMICALLY PREFERRED AXIAL ALLYLIC NHTS SUBSTITUENT IN SIMPLE 1-TRIISOPROPYLSILYL(OXY)-CYCLOHEXENES - SOLID-STATE CONFORMATION BY X-RAY CRYSTALLOGRAPHY

For a series of 6-(4-methylphenylsulphonyl)amino-1-triisopropylsilyl(oxy)-cyclohexenes the preferred conformation, in the solid state, has the -NHTs (Ts = 4-methylphenylsulphonyl) group in an axial orientation; if the axial-NHTs group experiences a 1,3-diaxial interaction with a methyl group, the equatorial conformation becomes the thermodynamically more stable form.