Tandem-Bisalkylation of 2-Trialkylsilyl-1,3-dithiane: A New Sequential Transformation for the Synthesis of C2-Symmetrical Enantiopure 1,5-Diols and β,β′-Dihydroxyketones as well as of Enantiopure 1,3,5-Triols - Tietze, L F; Geissler, H; Gewert, J A; Jakobi, U (Synlett, 1994)