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The Reaction of 5-Amino-3-(cyanomethyl)-1H-pyrazol-4-carbonitrile with beta-Cycloketols

1
Department of Chemistry and High Technologies, Kuban State University, 149 Stavropolskaya str, Krasnodar 350040, Russia
2
ChemEx Lab, Vladimir Dal’ Lugansk National University, 20A/7 Molodezhny, Lugansk 91034, Russia
3
Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355009 Stavropol, Russia
4
North Caucasus Humanitarian Technological Academy, Medical Institute, 36 Stavropolskaya str., 369000 Cherkessk, Russia
5
The Federal State Unitary Enterprise “Institute of Chemical Reagents and High Purity Chemical Substances” of National Research Centre “Kurchatov Institute”, 3 Bogorodsky Val, Moscow 107076, Russia
*
Author to whom correspondence should be addressed.
Presented at the 22nd International Electronic Conference on Synthetic Organic Chemistry, 15 November–15 December 2018; Available Online: https://sciforum.net/conference/ecsoc-22
Proceedings 2019, 9(1), 25; https://doi.org/10.3390/ecsoc-22-05679
Published: 14 November 2018
PDF [361 KB, uploaded 20 March 2019]

Abstract

The reaction of 5-amino-3-(cyanomethyl)-1H-pyrazole-4-carbonitrile with 3-aryl-2,4-di (ethoxycarbonyl)-5-hydroxy-5-methylcyclohexanones in boiling acetic acid leads to the formation of new 4,5,6,7,8,9-hexahydropyrazolo[1,5-a]quinazolines. The mechanism is discussed. The structure of the products was confirmed by means of 1Н и 13С (DEPTQ) NMR, as well as 2D NMR (NOESY, 1Н–13С HSQC, HMBC).
Keywords: β-cycloketols; aminopyrazole; cyclocondensation; pyrazolo[1,5-a]quinazoline β-cycloketols; aminopyrazole; cyclocondensation; pyrazolo[1,5-a]quinazoline
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Dotsenko, V.V.; Semenova, A.M.; Chigorina, E.A.; Aksenov, N.A.; Aksenova, I.V. The Reaction of 5-Amino-3-(cyanomethyl)-1H-pyrazol-4-carbonitrile with beta-Cycloketols. Proceedings 2019, 9, 25.

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