Pauson-Khand Reaction of Internal Dissymmetric Trifluoromethyl Alkynes. Influence of the Alkene on the Regioselectivity

The scope of the Pauson-Khand reaction (PKR) of internal trifluoromethyl alkynes, previously described with norbornadiene, is expanded to norbornene and ethylene. A thorough structural analysis of the resulting PK adducts has been carried out to unveil that α-trifluoromethylcyclopentenones are prefe...

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Main Authors: Nuria Aiguabella, Elsa M. Arce, Carlos del Pozo, Xavier Verdaguer, Antoni Riera
Format: Article
Language:English
Published: MDPI AG 2014-02-01
Series:Molecules
Subjects:
Online Access:http://www.mdpi.com/1420-3049/19/2/1763
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author Nuria Aiguabella
Elsa M. Arce
Carlos del Pozo
Xavier Verdaguer
Antoni Riera
author_facet Nuria Aiguabella
Elsa M. Arce
Carlos del Pozo
Xavier Verdaguer
Antoni Riera
author_sort Nuria Aiguabella
collection DOAJ
description The scope of the Pauson-Khand reaction (PKR) of internal trifluoromethyl alkynes, previously described with norbornadiene, is expanded to norbornene and ethylene. A thorough structural analysis of the resulting PK adducts has been carried out to unveil that α-trifluoromethylcyclopentenones are preferred in all cases, independently of the electronic properties of the alkyne. The regioselectivity observed with norbornadiene and ethylene is higher than in the case of norbornene.
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spelling doaj.art-ea62c19f8bae481b90a490e99decceab2022-12-21T17:57:19ZengMDPI AGMolecules1420-30492014-02-011921763177410.3390/molecules19021763molecules19021763Pauson-Khand Reaction of Internal Dissymmetric Trifluoromethyl Alkynes. Influence of the Alkene on the RegioselectivityNuria Aiguabella0Elsa M. Arce1Carlos del Pozo2Xavier Verdaguer3Antoni Riera4Institute for Research in Biomedicine (IRB Barcelona), Baldiri i Reixac, 10. 08028 Barcelona, SpainInstitute for Research in Biomedicine (IRB Barcelona), Baldiri i Reixac, 10. 08028 Barcelona, SpainDepartment de Química Orgánica, Universidad de Valencia, E-46100 Burjassot, SpainInstitute for Research in Biomedicine (IRB Barcelona), Baldiri i Reixac, 10. 08028 Barcelona, SpainInstitute for Research in Biomedicine (IRB Barcelona), Baldiri i Reixac, 10. 08028 Barcelona, SpainThe scope of the Pauson-Khand reaction (PKR) of internal trifluoromethyl alkynes, previously described with norbornadiene, is expanded to norbornene and ethylene. A thorough structural analysis of the resulting PK adducts has been carried out to unveil that α-trifluoromethylcyclopentenones are preferred in all cases, independently of the electronic properties of the alkyne. The regioselectivity observed with norbornadiene and ethylene is higher than in the case of norbornene.http://www.mdpi.com/1420-3049/19/2/1763Pauson-Khand reactioncycloadditionsregioselectivitycyclopentenonestrifluoromethylalkynes
spellingShingle Nuria Aiguabella
Elsa M. Arce
Carlos del Pozo
Xavier Verdaguer
Antoni Riera
Pauson-Khand Reaction of Internal Dissymmetric Trifluoromethyl Alkynes. Influence of the Alkene on the Regioselectivity
Molecules
Pauson-Khand reaction
cycloadditions
regioselectivity
cyclopentenones
trifluoromethylalkynes
title Pauson-Khand Reaction of Internal Dissymmetric Trifluoromethyl Alkynes. Influence of the Alkene on the Regioselectivity
title_full Pauson-Khand Reaction of Internal Dissymmetric Trifluoromethyl Alkynes. Influence of the Alkene on the Regioselectivity
title_fullStr Pauson-Khand Reaction of Internal Dissymmetric Trifluoromethyl Alkynes. Influence of the Alkene on the Regioselectivity
title_full_unstemmed Pauson-Khand Reaction of Internal Dissymmetric Trifluoromethyl Alkynes. Influence of the Alkene on the Regioselectivity
title_short Pauson-Khand Reaction of Internal Dissymmetric Trifluoromethyl Alkynes. Influence of the Alkene on the Regioselectivity
title_sort pauson khand reaction of internal dissymmetric trifluoromethyl alkynes influence of the alkene on the regioselectivity
topic Pauson-Khand reaction
cycloadditions
regioselectivity
cyclopentenones
trifluoromethylalkynes
url http://www.mdpi.com/1420-3049/19/2/1763
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