𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Mass spectrometric studies of some 4-acyl substituted 1-phenyl-3-methyl-5-pyrazolones

✍ Scribed by Elfinn Larsen; Iqbal H. Qureshi; Jørgen Møller

Publisher
John Wiley and Sons
Year
1973
Tongue
English
Weight
369 KB
Volume
7
Category
Article
ISSN
1076-5174

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Mass spectrometric study on methyl 5-met
Mass spectrometric study on methyl 5-methyl-2-oxo-3-[2-(4-R-phenyl)-1-ethyl]cyclopentanecarboxylates and methyl 2-oxo-5-(4-R-phenyl)-3-propylcyclopentanecarboxylates
✍ Xiaoran He; Bei Chen; Jianbo Wang; Meiyu He 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 102 KB 👁 1 views

The mechanisms of mass spectrometric fragmentation of eight new compounds, including methyl 5-methyl-2-oxo-3-[2-(4-R-phenyl)-1-ethyl]cyclopentanecarboxylates (Group I, R = substituent) and methyl 2-oxo-5-(4-R-phenyl)-3-propylcyclopentanecarboxylates (Group II, R = substituent), were studied using ma

Transformation of 4-(1-dimethylaminoethy
Transformation of 4-(1-dimethylaminoethylidene)-2-phenyl-5(4H)-oxazolone into methyl 2-benzoylamino-3-oxobutanoate. The synthesis of 1-substituted 4-benzoylamino-3-methyl-5(2H)-pyrazolones
✍ UrŠKa Bratušek; AleŠ Hvala; Branko Stanovnik 📂 Article 📅 1998 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 352 KB

## Abstract Methyl 2‐benzoylamino‐3‐oxobutanoate (3) was prepared from hippuric acid (1) which was converted with __N,N‐__dimethylacetamide and phosphorus oxychloride into 4‐(1‐dimethylaminoethylidene)‐2‐phenyl‐5(4__H__)‐oxazolone (2) followed by hydrolysis with hydrochloric acid in methanol. Compo

Spectroscopic Studies of the Keto and En
Spectroscopic Studies of the Keto and Enol Tautomers of 1-Phenyl-3-Methyl-4-Benzoyl-5-Pyrazolone
✍ Yoshifumi Akama; Aijun Tong 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 100 KB

Molecular structures of the two tautomers of a ␤-diketone 1-phenyl-3-methyl-4-benzoyl-5pyrazolone (PMBP) were studied by MS, UV, IR, and X-ray diffraction methods. The mass spectra show little difference for the two forms of PMBP, while there are notable differences in the IR spectra as KBr pellets

Electrospray ionization mass spectrometr
Electrospray ionization mass spectrometry of 1-phenyl-3-methyl-5-pyrazolone derivatives of neutral andN-acetylated oligosaccharides
✍ Shen, Xiaodong; Perreault, Hélène 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 186 KB

Derivatization using 1-phenyl-3-methyl-5-pyrazolone (PMP) was selected among a number of reported methods for labeling carbohydrates, since it gives a quantitative yield, proceeds through a rapid reaction and involves a simple clean-up procedure. Moreover, PMP derivatives provide an increase in sens