Preparation of Functionalized Acylsilanes by Diol Cleavage of Cyclic 1,2-Dihydroxysilanes

We report a study on diol cleavage of cyclic 1,2-dihydroxysilanes for the preparation of functionalized acylsilanes. Sodium periodate turned out to be an efficient reagent for this transformation, resulting in good to excellent yields. The method is characterized by mild reaction conditions, and sometimes simple aqueous workup of the reaction mixture was sufficient to obtain the acylsilanes in high purity. An acyclic 1,2-dihydroxysilane was readily cleaved as well.