Synthesis of Thieno[2,3‐c]pyridine Derivatives by 1,2,3‐Triazole‐Mediated Metal‐Free Denitrogenative Transformation Reaction

Abstract In this study, we report the synthesis of thieno[2,3‐c]pyridine derivatives by a metal‐free method via fused 1,2,3‐triazoles. In the synthesis of this skeleton using a three‐step method, we first obtained 1‐(2,2‐dimethoxyethyl)‐5‐(thiophen‐2‐yl)‐1H‐1,2,3‐triazole through a one‐pot triazolat...

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Main Authors: Kumsal Eroğlu, Prof. Dr. Ömer Tahir Günkara, Prof. Dr. Wim Dehaen
Format: Article
Language:English
Published: Wiley-VCH 2025-05-01
Series:ChemistryOpen
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Online Access:https://doi.org/10.1002/open.202500060
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author Kumsal Eroğlu
Prof. Dr. Ömer Tahir Günkara
Prof. Dr. Wim Dehaen
author_facet Kumsal Eroğlu
Prof. Dr. Ömer Tahir Günkara
Prof. Dr. Wim Dehaen
author_sort Kumsal Eroğlu
collection DOAJ
description Abstract In this study, we report the synthesis of thieno[2,3‐c]pyridine derivatives by a metal‐free method via fused 1,2,3‐triazoles. In the synthesis of this skeleton using a three‐step method, we first obtained 1‐(2,2‐dimethoxyethyl)‐5‐(thiophen‐2‐yl)‐1H‐1,2,3‐triazole through a one‐pot triazolation reaction and in the next step, we synthesized the thieno[2,3‐c][1,2,3]triazolo[1,5‐ɑ]pyridine compound using a modified Pomeranz‐Fritsch reaction. In the final step, the synthesis of thieno[2,3‐c]pyridine derivatives was achieved in good yield via acid‐mediated denitrogenative transformation reactions. This mild condition synthetic process has enabled access to the title compounds, of which limited examples have been reported until now in the literature. Thus, the syntheses of 7‐(substituted methyl)thieno[2,3‐c]pyridine, thieno[2,3‐c]pyridine‐7‐ylmethyl esters, and imidazo[1,5‐ɑ]thieno[2,3‐c]pyridine derivatives have been successfully achieved.
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spelling doaj-art-a4b5ad6ec8d14a23b09ed221edf9a2f92025-08-20T03:49:22ZengWiley-VCHChemistryOpen2191-13632025-05-01145n/an/a10.1002/open.202500060Synthesis of Thieno[2,3‐c]pyridine Derivatives by 1,2,3‐Triazole‐Mediated Metal‐Free Denitrogenative Transformation ReactionKumsal Eroğlu0Prof. Dr. Ömer Tahir Günkara1Prof. Dr. Wim Dehaen2Department of Chemistry Yıldız Technical University Faculty of Art and Science Davutpasa Esenler 34220 Istanbul TürkiyeDepartment of Chemistry Yıldız Technical University Faculty of Art and Science Davutpasa Esenler 34220 Istanbul TürkiyeDepartment of Chemistry, KU Leuven Sustainable Chemistry for Metals and Molecules Celestijnenlaan 200F B-3001 Leuven BelgiumAbstract In this study, we report the synthesis of thieno[2,3‐c]pyridine derivatives by a metal‐free method via fused 1,2,3‐triazoles. In the synthesis of this skeleton using a three‐step method, we first obtained 1‐(2,2‐dimethoxyethyl)‐5‐(thiophen‐2‐yl)‐1H‐1,2,3‐triazole through a one‐pot triazolation reaction and in the next step, we synthesized the thieno[2,3‐c][1,2,3]triazolo[1,5‐ɑ]pyridine compound using a modified Pomeranz‐Fritsch reaction. In the final step, the synthesis of thieno[2,3‐c]pyridine derivatives was achieved in good yield via acid‐mediated denitrogenative transformation reactions. This mild condition synthetic process has enabled access to the title compounds, of which limited examples have been reported until now in the literature. Thus, the syntheses of 7‐(substituted methyl)thieno[2,3‐c]pyridine, thieno[2,3‐c]pyridine‐7‐ylmethyl esters, and imidazo[1,5‐ɑ]thieno[2,3‐c]pyridine derivatives have been successfully achieved.https://doi.org/10.1002/open.2025000601,2,3-triazolesmetal-free denitrogenative transformationthieno[2,3-c]pyridine
spellingShingle Kumsal Eroğlu
Prof. Dr. Ömer Tahir Günkara
Prof. Dr. Wim Dehaen
Synthesis of Thieno[2,3‐c]pyridine Derivatives by 1,2,3‐Triazole‐Mediated Metal‐Free Denitrogenative Transformation Reaction
ChemistryOpen
1,2,3-triazoles
metal-free denitrogenative transformation
thieno[2,3-c]pyridine
title Synthesis of Thieno[2,3‐c]pyridine Derivatives by 1,2,3‐Triazole‐Mediated Metal‐Free Denitrogenative Transformation Reaction
title_full Synthesis of Thieno[2,3‐c]pyridine Derivatives by 1,2,3‐Triazole‐Mediated Metal‐Free Denitrogenative Transformation Reaction
title_fullStr Synthesis of Thieno[2,3‐c]pyridine Derivatives by 1,2,3‐Triazole‐Mediated Metal‐Free Denitrogenative Transformation Reaction
title_full_unstemmed Synthesis of Thieno[2,3‐c]pyridine Derivatives by 1,2,3‐Triazole‐Mediated Metal‐Free Denitrogenative Transformation Reaction
title_short Synthesis of Thieno[2,3‐c]pyridine Derivatives by 1,2,3‐Triazole‐Mediated Metal‐Free Denitrogenative Transformation Reaction
title_sort synthesis of thieno 2 3 c pyridine derivatives by 1 2 3 triazole mediated metal free denitrogenative transformation reaction
topic 1,2,3-triazoles
metal-free denitrogenative transformation
thieno[2,3-c]pyridine
url https://doi.org/10.1002/open.202500060
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AT profdrwimdehaen synthesisofthieno23cpyridinederivativesby123triazolemediatedmetalfreedenitrogenativetransformationreaction