title: Iminopropadienones from dioxanediones, isoxazolopyrimidinones, pyridopyrimidinones, and pyridopyrimidinium olates.
abstract: Iminopropadienones, RN=C=C=C=O, can be generated from four different types of precursors in flash vacuum thermolysis reactions: 1,3-dioxane-4,6-diones 1, isoxazolopyrimidinones 2, pyridopyrimidinium olates 3, and pyridopyrimidinones 4. 2,6-Difluorophenyl-, 2,6-diethylphenyl-, o-tert-butylphenyl-, and mesityliminopropadienone have been directly observed by Ar matrix IR spectroscopy in one or more of these reactions. Reactions with bis-nucleophiles afford pyridopyrimidinones and perhydrodiazepinone derivatives.
authors.affiliation: Chemistry Department, School of Molecular and Microbial Sciences, The University of Queensland, Brisbane, Qld 4072, Australia.
authors.forename: Majed
authors.initials: M
authors.lastname: Shtaiwi
authors.forename: Curt
authors.initials: C
authors.lastname: Wentrup