Reduction of ketones with LiAIH4 complexes of alpha,alpha,alpha',alpha'-tetraaryl-1,3-dioxolane-4,5-dimethanols (TADDOLs) : a combination of enantioselective reduction and clathrate formation with a discusion of LAH reagents bearing C2-symmetrical ligands - Seebach, Dieter (Array, 1996)