Strategic application and transformation of ortho-disubstituted phenyl and cyclopropyl ketones to expand the scope of hydrogen borrowing catalysis.

The application of an iridium-catalyzed hydrogen borrowing process to enable the formation of α-branched ketones with higher alcohols is described. In order to facilitate this reaction, ortho-disubstituted phenyl and cyclopropyl ketones were recognized as crucial structural motifs for C-C bond forma...

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Main Authors: Frost, J, Cheong, C, Akhtar, W, Caputo, D, Stevenson, N, Donohoe, T
Format: Journal article
Language:English
Published: American Chemical Society 2015
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author Frost, J
Cheong, C
Akhtar, W
Caputo, D
Stevenson, N
Donohoe, T
author_facet Frost, J
Cheong, C
Akhtar, W
Caputo, D
Stevenson, N
Donohoe, T
author_sort Frost, J
collection OXFORD
description The application of an iridium-catalyzed hydrogen borrowing process to enable the formation of α-branched ketones with higher alcohols is described. In order to facilitate this reaction, ortho-disubstituted phenyl and cyclopropyl ketones were recognized as crucial structural motifs for C-C bond formation. Having optimized the key catalysis step, the ortho-disubstituted phenyl products could be further manipulated by a retro-Friedel-Crafts acylation reaction to produce synthetically useful carboxylic acid derivatives. In contrast, the cyclopropyl ketones underwent homoconjugate addition with several nucleophiles to provide further functionalized branched ketone products.
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spelling oxford-uuid:fa318189-0412-4a07-967e-fb27177bf34d2022-03-27T13:03:46ZStrategic application and transformation of ortho-disubstituted phenyl and cyclopropyl ketones to expand the scope of hydrogen borrowing catalysis.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fa318189-0412-4a07-967e-fb27177bf34dEnglishSymplectic Elements at OxfordAmerican Chemical Society2015Frost, JCheong, CAkhtar, WCaputo, DStevenson, NDonohoe, TThe application of an iridium-catalyzed hydrogen borrowing process to enable the formation of α-branched ketones with higher alcohols is described. In order to facilitate this reaction, ortho-disubstituted phenyl and cyclopropyl ketones were recognized as crucial structural motifs for C-C bond formation. Having optimized the key catalysis step, the ortho-disubstituted phenyl products could be further manipulated by a retro-Friedel-Crafts acylation reaction to produce synthetically useful carboxylic acid derivatives. In contrast, the cyclopropyl ketones underwent homoconjugate addition with several nucleophiles to provide further functionalized branched ketone products.
spellingShingle Frost, J
Cheong, C
Akhtar, W
Caputo, D
Stevenson, N
Donohoe, T
Strategic application and transformation of ortho-disubstituted phenyl and cyclopropyl ketones to expand the scope of hydrogen borrowing catalysis.
title Strategic application and transformation of ortho-disubstituted phenyl and cyclopropyl ketones to expand the scope of hydrogen borrowing catalysis.
title_full Strategic application and transformation of ortho-disubstituted phenyl and cyclopropyl ketones to expand the scope of hydrogen borrowing catalysis.
title_fullStr Strategic application and transformation of ortho-disubstituted phenyl and cyclopropyl ketones to expand the scope of hydrogen borrowing catalysis.
title_full_unstemmed Strategic application and transformation of ortho-disubstituted phenyl and cyclopropyl ketones to expand the scope of hydrogen borrowing catalysis.
title_short Strategic application and transformation of ortho-disubstituted phenyl and cyclopropyl ketones to expand the scope of hydrogen borrowing catalysis.
title_sort strategic application and transformation of ortho disubstituted phenyl and cyclopropyl ketones to expand the scope of hydrogen borrowing catalysis
work_keys_str_mv AT frostj strategicapplicationandtransformationoforthodisubstitutedphenylandcyclopropylketonestoexpandthescopeofhydrogenborrowingcatalysis
AT cheongc strategicapplicationandtransformationoforthodisubstitutedphenylandcyclopropylketonestoexpandthescopeofhydrogenborrowingcatalysis
AT akhtarw strategicapplicationandtransformationoforthodisubstitutedphenylandcyclopropylketonestoexpandthescopeofhydrogenborrowingcatalysis
AT caputod strategicapplicationandtransformationoforthodisubstitutedphenylandcyclopropylketonestoexpandthescopeofhydrogenborrowingcatalysis
AT stevensonn strategicapplicationandtransformationoforthodisubstitutedphenylandcyclopropylketonestoexpandthescopeofhydrogenborrowingcatalysis
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