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) / Azev Yu. A.,Kovalev I. S.,Mekhaev A. V.,Gibor A. M.,Baranov V. I.,Bakulev V. A.,Ermakova O. S. // CHEMISTRY OF HETEROCYCLIC COMPOUNDS. - 2013. - V. 49, l. 4. - P. 545-550.

ISSN/EISSN:

0009-3122 / нет данных

Type:

Article

Abstract:

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.

Author keywords:

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

DOI:

10.1007/s10593-013-1280-7

Web of Science ID:

ISI:000322133800004

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUL
Publisher	SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013 USA
Language	English
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Organic
Author-Email	azural@yandex.ru mehaev@ios.uran.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}11-03-00579-a]
Funding-Text	The authors thank the Russian Foundation for Basic Research for financial assistance (grant 11-03-00579-a).
Number-of-Cited-References	6
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	7
Journal-ISO	Chem. Heterocycl. Compds.
Doc-Delivery-Number	187QN