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author_facet |
Belasri, Khadija Fülöp, Ferenc Szatmári, István Belasri, Khadija Fülöp, Ferenc Szatmári, István |
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author |
Belasri, Khadija Fülöp, Ferenc Szatmári, István |
spellingShingle |
Belasri, Khadija Fülöp, Ferenc Szatmári, István Molecules Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines Chemistry (miscellaneous) Analytical Chemistry Organic Chemistry Physical and Theoretical Chemistry Molecular Medicine Drug Discovery Pharmaceutical Science |
author_sort |
belasri, khadija |
spelling |
Belasri, Khadija Fülöp, Ferenc Szatmári, István 1420-3049 MDPI AG Chemistry (miscellaneous) Analytical Chemistry Organic Chemistry Physical and Theoretical Chemistry Molecular Medicine Drug Discovery Pharmaceutical Science http://dx.doi.org/10.3390/molecules24193578 <jats:p>By direct coupling 7-azaindole and cyclic imines, such as 3,4-dihydroisoquinoline, 6,7-dihydrothieno[3,2-c]pyridine, 3,4-dihydro-β-carboline, and 4,5-dihydro-3H-benz[c]azepine, new 3-substituted 7-azaindole derivatives have been synthesized. The reaction was extended to 4-azaindoles and 6-azaindoles, as electron-rich aromatic compounds. The lowest reactivity was observed in the case of C-3 substitution of 5-azaindole. In this case, the aza-Friedel-Crafts reaction took place by using 10 mol % of p-toluenesulfonic acid (p-TSA) as the catalyst. The role of the acid catalyst can be explained by the different pKa values of the azaindoles. All reactions were performed in solvent-free conditions by using both classical heating and microwave irradiation. In all cases, microwave heating proved to be more convenient to synthesize new C-3-substituted azaindole derivatives.</jats:p> Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines Molecules |
doi_str_mv |
10.3390/molecules24193578 |
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Physik Medizin Chemie und Pharmazie Technik |
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MDPI AG, 2019 |
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2019 |
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MDPI AG |
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Molecules |
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49 |
title |
Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
title_unstemmed |
Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
title_full |
Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
title_fullStr |
Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
title_full_unstemmed |
Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
title_short |
Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
title_sort |
solvent-free c-3 coupling of azaindoles with cyclic imines |
topic |
Chemistry (miscellaneous) Analytical Chemistry Organic Chemistry Physical and Theoretical Chemistry Molecular Medicine Drug Discovery Pharmaceutical Science |
url |
http://dx.doi.org/10.3390/molecules24193578 |
publishDate |
2019 |
physical |
3578 |
description |
<jats:p>By direct coupling 7-azaindole and cyclic imines, such as 3,4-dihydroisoquinoline, 6,7-dihydrothieno[3,2-c]pyridine, 3,4-dihydro-β-carboline, and 4,5-dihydro-3H-benz[c]azepine, new 3-substituted 7-azaindole derivatives have been synthesized. The reaction was extended to 4-azaindoles and 6-azaindoles, as electron-rich aromatic compounds. The lowest reactivity was observed in the case of C-3 substitution of 5-azaindole. In this case, the aza-Friedel-Crafts reaction took place by using 10 mol % of p-toluenesulfonic acid (p-TSA) as the catalyst. The role of the acid catalyst can be explained by the different pKa values of the azaindoles. All reactions were performed in solvent-free conditions by using both classical heating and microwave irradiation. In all cases, microwave heating proved to be more convenient to synthesize new C-3-substituted azaindole derivatives.</jats:p> |
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author | Belasri, Khadija, Fülöp, Ferenc, Szatmári, István |
author_facet | Belasri, Khadija, Fülöp, Ferenc, Szatmári, István, Belasri, Khadija, Fülöp, Ferenc, Szatmári, István |
author_sort | belasri, khadija |
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container_start_page | 0 |
container_title | Molecules |
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description | <jats:p>By direct coupling 7-azaindole and cyclic imines, such as 3,4-dihydroisoquinoline, 6,7-dihydrothieno[3,2-c]pyridine, 3,4-dihydro-β-carboline, and 4,5-dihydro-3H-benz[c]azepine, new 3-substituted 7-azaindole derivatives have been synthesized. The reaction was extended to 4-azaindoles and 6-azaindoles, as electron-rich aromatic compounds. The lowest reactivity was observed in the case of C-3 substitution of 5-azaindole. In this case, the aza-Friedel-Crafts reaction took place by using 10 mol % of p-toluenesulfonic acid (p-TSA) as the catalyst. The role of the acid catalyst can be explained by the different pKa values of the azaindoles. All reactions were performed in solvent-free conditions by using both classical heating and microwave irradiation. In all cases, microwave heating proved to be more convenient to synthesize new C-3-substituted azaindole derivatives.</jats:p> |
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publishDate | 2019 |
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series | Molecules |
source_id | 49 |
spelling | Belasri, Khadija Fülöp, Ferenc Szatmári, István 1420-3049 MDPI AG Chemistry (miscellaneous) Analytical Chemistry Organic Chemistry Physical and Theoretical Chemistry Molecular Medicine Drug Discovery Pharmaceutical Science http://dx.doi.org/10.3390/molecules24193578 <jats:p>By direct coupling 7-azaindole and cyclic imines, such as 3,4-dihydroisoquinoline, 6,7-dihydrothieno[3,2-c]pyridine, 3,4-dihydro-β-carboline, and 4,5-dihydro-3H-benz[c]azepine, new 3-substituted 7-azaindole derivatives have been synthesized. The reaction was extended to 4-azaindoles and 6-azaindoles, as electron-rich aromatic compounds. The lowest reactivity was observed in the case of C-3 substitution of 5-azaindole. In this case, the aza-Friedel-Crafts reaction took place by using 10 mol % of p-toluenesulfonic acid (p-TSA) as the catalyst. The role of the acid catalyst can be explained by the different pKa values of the azaindoles. All reactions were performed in solvent-free conditions by using both classical heating and microwave irradiation. In all cases, microwave heating proved to be more convenient to synthesize new C-3-substituted azaindole derivatives.</jats:p> Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines Molecules |
spellingShingle | Belasri, Khadija, Fülöp, Ferenc, Szatmári, István, Molecules, Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines, Chemistry (miscellaneous), Analytical Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Molecular Medicine, Drug Discovery, Pharmaceutical Science |
title | Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
title_full | Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
title_fullStr | Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
title_full_unstemmed | Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
title_short | Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
title_sort | solvent-free c-3 coupling of azaindoles with cyclic imines |
title_unstemmed | Solvent-Free C-3 Coupling of Azaindoles with Cyclic Imines |
topic | Chemistry (miscellaneous), Analytical Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Molecular Medicine, Drug Discovery, Pharmaceutical Science |
url | http://dx.doi.org/10.3390/molecules24193578 |