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
收藏
页码：545 / 550
页数：6
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