Synthesis, thermal transformations, and mass spectrometric fragmentation of 4,4′-[1,2-bis(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)ethane-1,2-diyl]-bis(5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one)

被引：1

作者：

Azev, Yu. A. ^{[1
]}

Kovalev, I. S. ^{[1
]}

Mekhaev, A. V. ^{[2
]}

Gibor, A. M. ^{[1
]}

Baranov, V. I. ^{[1
]}

Bakulev, V. A. ^{[1
]}

Ermakova, O. S. ^{[1
]}

机构：

[1] Ural Fed Univ, Ekaterinburg 620002, Russia

[2] Russian Acad Sci, Ural Branch, I Ya Postovskii Inst Organ Synth, Ekaterinburg 620219, Russia

来源：

CHEMISTRY OF HETEROCYCLIC COMPOUNDS | 2013年 / 49卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

3-methyl-1-phenylpyrazol-5-one; quinoxaline; tetrapyrazolylethane; thermogravimetry;

D O I：

10.1007/s10593-013-1280-7

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Quinoxaline reacted with 3-methyl-1-phenylpyrazol-5-one at room temperature in the presence of triethylamine in DMSO solution, to form 4,4'-[1,2-bis(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-ethane-1,2-diyl]bis(5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one). Heating of the obtained crystalline product at 240-250A degrees C temperature led to the known 4-[(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)methylidene]-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one. The mass spectral fragmentation of the obtained compounds was characterized.

引用

页码：545 / 550

页数：6

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