✦ LIBER ✦

Some Observations on Recent Studies Concerning the Electron Ionization Mass Spectrometry of 4(3H)-Quinazolinones

✍ Scribed by Agozzino, P.; Ceraulo, L.; Ferrugia, M.; Rainieri, R.

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 211 KB
Volume: 31
Category: Article
ISSN: 1076-5174
DOI: 10.1002/(sici)1096-9888(199612)31:12<1441::aid-jms441>3.0.co;2-9

No coin nor oath required. For personal study only.

✦ Synopsis

JMS Letters

Dear Sir,

Some Observations on Recent Studies Concerning the Electron Ionization Mass Spectrometry of 4(3H)-Quinazolinoaes

The 4(3H)-quinazolinones (1) account for different biological activities (sedative-hypnotic, anticonvulsive, muscle relaxant, local anesthetic, analgesic, antipyretic and anti-inflammatory), depending on the presence of particular substituents, mainly at the 2and 3-positions.' 0

📜 SIMILAR VOLUMES

Mass spectrometry of some methyl esters

Mass spectrometry of some methyl esters of N-4-pyrimidinylamino acids: Rearrangements of the ions occurring on electron-impact ionization

✍ Adam S. Plaziak; Lech Celewicz; Jaroslaw Spychala; Krzysztof Golankiewicz 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 247 KB

ChemInform Abstract: Comparative Studies

ChemInform Abstract: Comparative Studies on the Behavior of 3-Amino-2-phenyl-4(3H)-quinazolinone (I) Towards Some Organophosphorus Reagents.

✍ Leila S. Boulos; Mona H. N. Arsanious; El-Sayed M. A. Yakout 📂 Article 📅 2008 🏛 John Wiley and Sons ⚖ 28 KB

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v

Electron ionization mass spectra of 3,4-

Electron ionization mass spectra of 3,4-disubstituted-1,2,4-oxa(thia)diazole-5(4H)-thione(ones). Substituent effects on the mass spectrometric rearrangement of 3-aryl-4-(p-tolyl)-1,2,4-oxadiazole-5(4H)-thiones to the corresponding oxo compounds

✍ Kalevi Pihlaja; Hikmet Agirbas; Pauliina Valtamo 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 134 KB

The fragmentation behaviour of ten 3,4-disubstituted 1,2,4-oxadiazole-5(4H)-thiones and seven 3,4-disubstituted 1,2,4-thiadiazole-5(4H)-ones studied here confirmed the earlier observations about the partial rearrangement of the former after ionization into the latter before further fragmentation. In

Trimethylsilyl group migration during el

Trimethylsilyl group migration during electron impact and chemical ionization mass spectrometry of the trimethylsilyl ethers of 20-hydroxy-5α-pregnan-3-ones and 20-hydroxy-4-pregnen-3-ones

✍ Andrew G. Smith; Simon J. Gaskell; Charles J. W. Brooks 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 420 KB

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.

Mass spectrometric study of some cycloal

Mass spectrometric study of some cycloalkane/ene-condensed 2-thioxo-2935556-pyrimidin-4(1H)-ones and cycloalkane/ene-condensed [l,3] thwzino [3,2-a]-pyrimidinones under electron impact

✍ Marja Himottu; Kalevi Pihlaja; Géza Stájer; Gábor Bernáth; Pirjo Vainiotalo 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 328 KB

The mass spectra of four cycloalkane/ene cis-and trans-condensed 2-thioxo-2,3,5,6-tetrahydropyrimidin-4(1H)ones and the corresponding cycloalkane/ene cis-and trans-condensed I 1,3 1 thiazino I3,2-a I pyrimidinones were measured. Fragmentation pathways were confirmed by metastable ion analyses and ex