Microwave-Assisted Sequential One-Pot Synthesis of 8-Substituted Pyrazolo[1,5-<i>a</i>][1,3,5]triazines

This paper reports a convenient sequential one-pot approach for the synthesis of an array of 14 pyrazolo[1,5-<i>a</i>][1,3,5]triazines, substituted in C8 by halogen (Br), various functions (CN and CO<sub>2</sub>Et) and alkyl or (het)aryl groups. This study confirms the intere...

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Main Authors: Jonathan Elie, Corinne Fruit, Thierry Besson
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/26/12/3540
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author Jonathan Elie
Corinne Fruit
Thierry Besson
author_facet Jonathan Elie
Corinne Fruit
Thierry Besson
author_sort Jonathan Elie
collection DOAJ
description This paper reports a convenient sequential one-pot approach for the synthesis of an array of 14 pyrazolo[1,5-<i>a</i>][1,3,5]triazines, substituted in C8 by halogen (Br), various functions (CN and CO<sub>2</sub>Et) and alkyl or (het)aryl groups. This study confirms the interest of combining the efficient heating obtained under dielectric microwave heating and the achievement of sequential one-pot reactions, avoiding the tedious work-up and purification of intermediate compounds, achieving sustainable synthesis processes. Considering usual conventional methods, this microwave protocol is featured by advantages in terms of yields, reaction times, and convenient gram scale synthesis.
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spelling doaj.art-946041da85e945e48f5d8fc6114f67cc2023-11-21T23:31:51ZengMDPI AGMolecules1420-30492021-06-012612354010.3390/molecules26123540Microwave-Assisted Sequential One-Pot Synthesis of 8-Substituted Pyrazolo[1,5-<i>a</i>][1,3,5]triazinesJonathan Elie0Corinne Fruit1Thierry Besson2Perha Pharmaceuticals, Perharidy Peninsula, 29680 Roscoff, FrancePerha Pharmaceuticals, Perharidy Peninsula, 29680 Roscoff, FrancePerha Pharmaceuticals, Perharidy Peninsula, 29680 Roscoff, FranceThis paper reports a convenient sequential one-pot approach for the synthesis of an array of 14 pyrazolo[1,5-<i>a</i>][1,3,5]triazines, substituted in C8 by halogen (Br), various functions (CN and CO<sub>2</sub>Et) and alkyl or (het)aryl groups. This study confirms the interest of combining the efficient heating obtained under dielectric microwave heating and the achievement of sequential one-pot reactions, avoiding the tedious work-up and purification of intermediate compounds, achieving sustainable synthesis processes. Considering usual conventional methods, this microwave protocol is featured by advantages in terms of yields, reaction times, and convenient gram scale synthesis.https://www.mdpi.com/1420-3049/26/12/3540microwave-assisted chemistryone-pot synthesispyrazolo[1,5-<i>a</i>][1,3,5]triazines5-aza-9-deazapurines
spellingShingle Jonathan Elie
Corinne Fruit
Thierry Besson
Microwave-Assisted Sequential One-Pot Synthesis of 8-Substituted Pyrazolo[1,5-<i>a</i>][1,3,5]triazines
Molecules
microwave-assisted chemistry
one-pot synthesis
pyrazolo[1,5-<i>a</i>][1,3,5]triazines
5-aza-9-deazapurines
title Microwave-Assisted Sequential One-Pot Synthesis of 8-Substituted Pyrazolo[1,5-<i>a</i>][1,3,5]triazines
title_full Microwave-Assisted Sequential One-Pot Synthesis of 8-Substituted Pyrazolo[1,5-<i>a</i>][1,3,5]triazines
title_fullStr Microwave-Assisted Sequential One-Pot Synthesis of 8-Substituted Pyrazolo[1,5-<i>a</i>][1,3,5]triazines
title_full_unstemmed Microwave-Assisted Sequential One-Pot Synthesis of 8-Substituted Pyrazolo[1,5-<i>a</i>][1,3,5]triazines
title_short Microwave-Assisted Sequential One-Pot Synthesis of 8-Substituted Pyrazolo[1,5-<i>a</i>][1,3,5]triazines
title_sort microwave assisted sequential one pot synthesis of 8 substituted pyrazolo 1 5 i a i 1 3 5 triazines
topic microwave-assisted chemistry
one-pot synthesis
pyrazolo[1,5-<i>a</i>][1,3,5]triazines
5-aza-9-deazapurines
url https://www.mdpi.com/1420-3049/26/12/3540
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AT thierrybesson microwaveassistedsequentialonepotsynthesisof8substitutedpyrazolo15iai135triazines