Piperidines are commonly-occurring structural units found in myriad biologically important agents.  A new approach toward the enantioselective synthesis of piperidines through Mo-catalyzed AROCM will be presented.  Reactions proceed readily to afford a variety of functionalized heterocycles.  In addition, these studies highlight reactivity and selectivity differences between chiral Mo and Ru catalysts for asymmetric olefin metathesis.