title: Intramolecular Diels-Alder Reaction of 2-Cyano-1-aza-1,3-butadienes.
abstract: It has been demonstrated that a 2-cyano substituent is sufficient to activate 1-aza-1,3-butadienes with respect to the intramolecular Diels-Alder reaction. This reaction is successful for the preparation of the indolizidine and quinolizidine ring systems. The stereochemistry of the isomeric products was assigned by a careful analysis of their NMR spectral data.
authors.affiliation: Department of Chemistry, State University at New York at Stony Brook, Stony Brook, New York 11794, and Institut de Chimie des Substances Naturelles, CNRS, F-91198 Gif-sur-Yvette, France.
authors.forename: Nicholas J.
authors.initials: NJ
authors.lastname: Sisti
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Zeller
authors.forename: David S.
authors.initials: DS
authors.lastname: Grierson
authors.forename: Frank W.
authors.initials: FW
authors.lastname: Fowler