SEARCH Articles Figures Tables A - pyrrolidine A metathesis A rearrangements Piperidine and pyrrolidine Piperidine ring Piperidine ring synthesi Piperidines rearrangement Piperidines, synthesis Pyrrolidine ring synthesis Pyrrolidines and Piperidines Pyrrolidines and piperidin Pyrrolidines pyrrolidine ring Pyrrolidines rearrangement Pyrrolidines rings Pyrrolidines, synthesis Rearrangements synthesis Ring metathesis Ring rearrangement metathesis Ring rearrangements Synthesis metathesis