title: Type 2 intramolecular nitroso Diels-Alder reaction. Synthesis and structure of bridgehead oxazinolactams.
abstract: [reaction--see text] The type 2 intramolecular Diels-Alder cycloaddition utilizing N-acylnitroso dienophiles provides an efficient entry into bridged oxazinolactams. In contrast to the bimolecular counterpart, the reaction is completely regioselective. Structural characterization of the cycloadducts allows for evaluation of the olefin distortion and the degree of pyramidalization of the bridgehead oxazinolactam.
authors.affiliation: Department of Chemistry, University of California, Irvine 92697-2025, USA.
authors.forename: S M
authors.initials: SM
authors.lastname: Sparks
authors.forename: J D
authors.initials: JD
authors.lastname: Vargas
authors.forename: K J
authors.initials: KJ
authors.lastname: Shea
mesh_terms: D007202:Indicators and Reagents; D007769:Lactams / Q000138:chemical synthesis* / Q000737:chemistry; D008958:Models, Molecular; D008968:Molecular Conformation; D015394:Molecular Structure; D009603:Nitroso Compounds; D010078:Oxazines / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D007202:Indicators and Reagents; D007769:Lactams; D009603:Nitroso Compounds; D010078:Oxazines