title: Mass spectra of 1,3,5-triarylpentane-1, 5-diones: formation and decomposition of pyrilium cation from the molecular ion.
abstract: Electron impact mass spectra of 1,3,5-triarylpentane-1,5-diones are reported. All compounds studied show a tendency to eliminate a water molecule and also the elements of [H3O] before fragmentation to smaller ions. The [H3O] loss proceeds via loss of water to form a pyran ion, which subsequently eliminates a hydrogen atom to form the stable pyrillium cation.
authors.affiliation: Organic Chemistry Laboratory: Structure & Reactivity, UFR-SEA, Ouagadougou University, 03 BP 7021, Ouagadougou 03, Burkina Faso, West Africa.
authors.forename: Godefroy Elanga
authors.initials: GE
authors.lastname: Mpoh
authors.forename: Edouard
authors.initials: E
authors.lastname: Tapsoba
authors.forename: Roger Charles
authors.initials: RC
authors.lastname: Nébié
authors.forename: Yvonne Libona
authors.initials: YL
authors.lastname: Bonzi-Coulibaly
authors.forename: Faustin Sib
authors.initials: FS
authors.lastname: Sié
mesh_terms: D002412:Cations / Q000737:chemistry; D011721:Pyrenes / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D014867:Water / Q000737:chemistry
chemical_list: D002412:Cations; D011721:Pyrenes; D014867:Water