title: Ring transformation of unsaturated N-bridgehead fused pyrimidin-4(3H)-ones: role of repulsive electrostatic nonbonded interaction.
abstract: Thermal ring transformation ability of unsaturated N-bridgehead fused pyrimidin-4(3H)-ones A is governed by both the steric and the electrostatic interactions between the oxygen of the carbonyl group and the substituent in the peri position.
authors.affiliation: R&D of Chinoin Ltd., Tó utca 1-5, H-1045 Budapest, Hungary.
authors.forename: Annamária
authors.initials: A
authors.lastname: Molnár
authors.forename: Zoltán
authors.initials: Z
authors.lastname: Mucsi
authors.forename: Gábor
authors.initials: G
authors.lastname: Vlád
authors.forename: Kálmán
authors.initials: K
authors.lastname: Simon
authors.forename: Tamás
authors.initials: T
authors.lastname: Holczbauer
authors.forename: Benjámin
authors.initials: B
authors.lastname: Podányi
authors.forename: Ferenc
authors.initials: F
authors.lastname: Faigl
authors.forename: István
authors.initials: I
authors.lastname: Hermecz
mesh_terms: D003500:Cyclization; D003516:Cycloparaffins / Q000737:chemistry*; D006574:Heterocyclic Compounds, 2-Ring / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D011744:Pyrimidinones / Q000737:chemistry*
chemical_list: D003516:Cycloparaffins; D006574:Heterocyclic Compounds, 2-Ring; D011744:Pyrimidinones