One-Pot Synthesis of Secondary Alcohols and One-Pot Asymmetric Synthesis of Secondary Propargylic Alcohols; Redox Isomerization of Secondary Propargylic Alcohols to Enones; Synthesis Study towards C9-C14 Fragment of (+)-Discodermolide; Asymmetric Synthesis of Anti, Anti-Stereotriad Building Blocks for Polypropionate Natural Products