Lewis Acid Mediated Thienium Cation Diels-Alder Reaction: A New Method for Regio- and Stereoselective Functionalization of 1,3-Dienes

Article abstract of DOI:10.1016/S0040-4039(00)89135-2

Under the influence of aluminium chloride the β-ethylthionitroolefin results in the formation of the thienium cation, which reacts with a variety of 1,3-dienes in the Diels-Alder sense.The cleavage of the resulting ring provides in one pot the 1,4-functio