Observations on the Mechanism of the Lewis Acid Catalyzed Ene Reaction

Article abstract of DOI:10.1021/jo00148a041

The product resulting from the SnCl4-catalyzed reaction of allylbenzene and diethyl mesoxalate is shown to be an oxetane, contrary to the tetrahydrofuran structure assigned by previous authors.This evidence, taken together with the evidence of a β-seconda