Oxa-Michael-initiated cascade reactions of levoglucosenone

The reactions of aromatic aldehydes and levoglucosenone promoted by methoxide gives bridged α,β-unsaturated ketones, formed by a series of oxa-Michael-initiated cascade reactions in yields of up to 91% (14 examples). A complex series of equilibria operate during the reaction, and the formation of th...

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Main Authors: Julian Klepp, Thomas Bousfield, Hugh Cummins, Sarah V. A.-M. Legendre, Jason E. Camp, Ben W. Greatrex
Format: Article
Language:English
Published: Beilstein-Institut 2022-10-01
Series:Beilstein Journal of Organic Chemistry
Subjects:
Online Access:https://doi.org/10.3762/bjoc.18.151
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author Julian Klepp
Thomas Bousfield
Hugh Cummins
Sarah V. A.-M. Legendre
Jason E. Camp
Ben W. Greatrex
author_facet Julian Klepp
Thomas Bousfield
Hugh Cummins
Sarah V. A.-M. Legendre
Jason E. Camp
Ben W. Greatrex
author_sort Julian Klepp
collection DOAJ
description The reactions of aromatic aldehydes and levoglucosenone promoted by methoxide gives bridged α,β-unsaturated ketones, formed by a series of oxa-Michael-initiated cascade reactions in yields of up to 91% (14 examples). A complex series of equilibria operate during the reaction, and the formation of the bridged species is thermodynamically favored, except in the case of 5-methylfurfural and pyrrole-2-carboxaldehyde. This is the first report detailing this type of aldol/Michael cascade involving oxa-Michael initiation.
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spelling doaj.art-dd9308113d4847e585ad245d0b46ed872022-12-22T03:40:14ZengBeilstein-InstitutBeilstein Journal of Organic Chemistry1860-53972022-10-011811457146210.3762/bjoc.18.1511860-5397-18-151Oxa-Michael-initiated cascade reactions of levoglucosenoneJulian Klepp0Thomas Bousfield1Hugh Cummins2Sarah V. A.-M. Legendre3Jason E. Camp4Ben W. Greatrex5School of Rural Medicine, University of New England, Armidale, NSW, 2351, Australia Department of Chemical Sciences, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, United Kingdom School of Rural Medicine, University of New England, Armidale, NSW, 2351, Australia School of Rural Medicine, University of New England, Armidale, NSW, 2351, Australia Department of Chemical Sciences, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, United Kingdom School of Rural Medicine, University of New England, Armidale, NSW, 2351, Australia The reactions of aromatic aldehydes and levoglucosenone promoted by methoxide gives bridged α,β-unsaturated ketones, formed by a series of oxa-Michael-initiated cascade reactions in yields of up to 91% (14 examples). A complex series of equilibria operate during the reaction, and the formation of the bridged species is thermodynamically favored, except in the case of 5-methylfurfural and pyrrole-2-carboxaldehyde. This is the first report detailing this type of aldol/Michael cascade involving oxa-Michael initiation.https://doi.org/10.3762/bjoc.18.151cascade reactionsgreen chemistrylevoglucosenoneoxa-michael reaction
spellingShingle Julian Klepp
Thomas Bousfield
Hugh Cummins
Sarah V. A.-M. Legendre
Jason E. Camp
Ben W. Greatrex
Oxa-Michael-initiated cascade reactions of levoglucosenone
Beilstein Journal of Organic Chemistry
cascade reactions
green chemistry
levoglucosenone
oxa-michael reaction
title Oxa-Michael-initiated cascade reactions of levoglucosenone
title_full Oxa-Michael-initiated cascade reactions of levoglucosenone
title_fullStr Oxa-Michael-initiated cascade reactions of levoglucosenone
title_full_unstemmed Oxa-Michael-initiated cascade reactions of levoglucosenone
title_short Oxa-Michael-initiated cascade reactions of levoglucosenone
title_sort oxa michael initiated cascade reactions of levoglucosenone
topic cascade reactions
green chemistry
levoglucosenone
oxa-michael reaction
url https://doi.org/10.3762/bjoc.18.151
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