Guan, Dexin, Jonathan Holmes, A., López-Serrano, Joaquín et al. (1 more author) (2017) Following palladium catalyzed methoxycarbonylation by hyperpolarized NMR spectroscopy:A: para hydrogen based investigation. Catalysis Science and Technology. pp. 2101-2109. ISSN 2044-4761
Abstract
Pd(OTf)2(bcope) is shown to react in methanol solution with diphenylacetylene, carbon monoxide and hydrogen to produce the methoxy-carbonylation product methyl 2,3 diphenyl acrylate alongside cis- and trans-stilbene. In situ NMR studies harnessing the parahydrogen induced polarization effect reveal substantially enhanced 1H NMR signals in both protic and aprotic solvents for a series of reaction intermediates that play a direct role in this homogeneous transformation. Exchange spectroscopy (EXSY) measurements reveal that the corresponding CO adducts are less reactive than their methanol counterparts.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Royal Society of Chemistry 2017. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 26 Apr 2017 11:00 |
Last Modified: | 08 Feb 2025 00:22 |
Published Version: | https://doi.org/10.1039/c7cy00252a |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1039/c7cy00252a |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:115638 |
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Filename: Pd_Catalysis.pdf
Description: Following Palladium Catalyzed Methoxycarbonylation by Hyperpolarized NMR Spectroscopy: A Parahydrogen Based Investigation