Modular synthesis of di- and trisubstituted imidazoles from ketones and aldehydes: a route to kinase inhibitors

A one-pot and modular approach to the synthesis of 2,4(5)-disubstituted imidazoles was developed based on ketone oxidation, employing catalytic HBr and DMSO, followed by imidazole condensation with aldehydes. This methodology afforded twenty-nine disubstituted NH-imidazoles (23%–85% yield). A three-...

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Main Authors: De Toledo, I, Grigolo, TA, Bennett, JM, Elkins, J, Pilli, RA
Format: Journal article
Language:English
Published: American Chemical Society 2019
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author De Toledo, I
Grigolo, TA
Bennett, JM
Elkins, J
Pilli, RA
author_facet De Toledo, I
Grigolo, TA
Bennett, JM
Elkins, J
Pilli, RA
author_sort De Toledo, I
collection OXFORD
description A one-pot and modular approach to the synthesis of 2,4(5)-disubstituted imidazoles was developed based on ketone oxidation, employing catalytic HBr and DMSO, followed by imidazole condensation with aldehydes. This methodology afforded twenty-nine disubstituted NH-imidazoles (23%–85% yield). A three-step synthesis of 20 kinase inhibitors was achieved by employing this oxidation–condensation protocol, followed by bromination and Suzuki coupling in the imidazole ring to yield trisubstituted NH-imidazoles (23%–69%, three steps). This approach was also employed in the synthesis of known inhibitor GSK3037619A.
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spelling oxford-uuid:12648292-ba92-4167-9aae-38a7cce35e422022-03-26T10:07:47ZModular synthesis of di- and trisubstituted imidazoles from ketones and aldehydes: a route to kinase inhibitorsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:12648292-ba92-4167-9aae-38a7cce35e42EnglishSymplectic Elements at OxfordAmerican Chemical Society2019De Toledo, IGrigolo, TABennett, JMElkins, JPilli, RAA one-pot and modular approach to the synthesis of 2,4(5)-disubstituted imidazoles was developed based on ketone oxidation, employing catalytic HBr and DMSO, followed by imidazole condensation with aldehydes. This methodology afforded twenty-nine disubstituted NH-imidazoles (23%–85% yield). A three-step synthesis of 20 kinase inhibitors was achieved by employing this oxidation–condensation protocol, followed by bromination and Suzuki coupling in the imidazole ring to yield trisubstituted NH-imidazoles (23%–69%, three steps). This approach was also employed in the synthesis of known inhibitor GSK3037619A.
spellingShingle De Toledo, I
Grigolo, TA
Bennett, JM
Elkins, J
Pilli, RA
Modular synthesis of di- and trisubstituted imidazoles from ketones and aldehydes: a route to kinase inhibitors
title Modular synthesis of di- and trisubstituted imidazoles from ketones and aldehydes: a route to kinase inhibitors
title_full Modular synthesis of di- and trisubstituted imidazoles from ketones and aldehydes: a route to kinase inhibitors
title_fullStr Modular synthesis of di- and trisubstituted imidazoles from ketones and aldehydes: a route to kinase inhibitors
title_full_unstemmed Modular synthesis of di- and trisubstituted imidazoles from ketones and aldehydes: a route to kinase inhibitors
title_short Modular synthesis of di- and trisubstituted imidazoles from ketones and aldehydes: a route to kinase inhibitors
title_sort modular synthesis of di and trisubstituted imidazoles from ketones and aldehydes a route to kinase inhibitors
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