Stereoselective allylic transposition by means of allylic n-pentenyl ethers. Part 2: Synthesis of nitrogen heterocycles

Stereospecific synthesis of optically active substituted pyrrolidines, and piperidines was studied via an intramolecular allylic rearrangement by means of allylic n-pentenyl ethers as leaving groups when reacting with halonium ions.