A highly efficient method for trimethylsilylation of primary, secondary, tertiary, allylic, and a variety of sugar??derived alcohols using hexamethyldisilazane in the presence of a catalytic amount of ammonium thiocyanate under neutral conditions is reported. ... A highly efficient method for trimethylsilylation of primary, secondary, tertiary, allylic, and a variety of sugar??derived alcohols using hexamethyldisilazane in the presence of a catalytic amount of ammonium ...