𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Electron impact mass spectrometry of some 6-substituted tetrazolo[1,5-c]pyrimidin-5(6H)-ones

✍ Scribed by Adam S. Płaziak; Lech Celewicz; Krzysztof Ciszewski; Krzysztof Golankiewicz

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
260 KB
Volume
28
Category
Article
ISSN
1076-5174

No coin nor oath required. For personal study only.

✦ Synopsis

The electron impact mass spectra of imethyltetrazolo [ 1,5-c] pyrimidin-Y6H)-one, its 7-and &methyl derivatives, three &halo derivatives and two related nucleosides are reported. On the basis of the high-resolution data and detected metastable ions, the fragmentation routes of their molecular ions are proposed. Coexistence of the tautomeric forms of the title compounds of cyclic (tetrazole) or linear (azide) structure can be suggested owing to the fragmentation pathways identified for the bases. Decomposition of the related nucleosides lies in the breaking of nucleoside bonds to produce the appropriate base and sugar fragments.

📜 SIMILAR VOLUMES

Mass spectrometry of some new pyrimidine
Mass spectrometry of some new pyrimidine derivatives: Electron impact-induced decomposition of 5-alkyl-5-acylamino-6-imino-1,2,5,6-tetrahydro-2(1H)-thioxopyrimidin-4(3H)-ones
✍ Adam S. Plaziak; Bozenna Golankiewicz; Joanna Zeidler; Krzysztof Golankiewicz 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 258 KB

The mass fragmentation of some new 5-substituted derivatives of Cimino-1,2,5,Ctetrahydro-2(1~ thioxopyrimidin-4(3H)-one are reported. Electron impact-induced decompositions occurred primarily on the substituents localized in the Iposition of the series.

Electron-impact mass spectra of substitu
Electron-impact mass spectra of substituted 1-alkyl-2-arylsulphonylamino-1,4,5,6-tetrahydropyrimidines
✍ Vladimir Ovcharenko; Elzbieta Szacon; Tadeusz Tkaczynski; Dariusz Matosiuk; Kale 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 88 KB 👁 1 views

Fragmentation pathways of the title compounds under electron impact were compared to those of their (1aryl)substituted analogs reported earlier. The main fragmentation route of the M Á ions is the sulphamide N-S bond cleavage leading to [M À ArSO 2 ] ions. No loss of the alkyl substituents from the

Electron Impact Mass Spectra of Substitu
Electron Impact Mass Spectra of Substituted 1-Aryl-2-arylsulphonylamino-1,4,5,6-tetrahydropyrimidines
✍ Vladimir Ovcharenko; Elzbieta Szacon; Tadeusz Tkaczynski; Dariusz Matosiuk; Kale 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 151 KB 👁 1 views

Fragmentation pathways of the title compounds were studied using accurate mass measurements and collision-induced dissociation spectra. Substituents in the ortho position of the aryl group at the pyrimidine ring were found to play a special role in the electron impact (EI) induced fragmentation of t