title: Sequential 1,2-Addition-Electrocyclic Ring Closures Involving Acyclic alpha,beta-Unsaturated Iminiums: A Formal [3 + 3] Cycloaddition Strategy to Unique Pyranyl Spirocycles.
authors.affiliation: Department of Chemistry, The University of Minnesota, Minneapolis, Minnesota 55455.
authors.forename: Richard P.
authors.initials: RP
authors.lastname: Hsung
authors.forename: Hong C.
authors.initials: HC
authors.lastname: Shen
authors.forename: Christopher J.
authors.initials: CJ
authors.lastname: Douglas
authors.forename: Christopher D.
authors.initials: CD
authors.lastname: Morgan
authors.forename: Shane J.
authors.initials: SJ
authors.lastname: Degen
authors.forename: Letitia J.
authors.initials: LJ
authors.lastname: Yao