Artículo
Following palladium catalyzed methoxycarbonylation by hyperpolarized NMR spectroscopy: a parahydrogen based investigation
Autor/es | Guan, Dexin
Holmes, A. Jonathan López Serrano, Joaquín Duckett, Simon B |
Departamento | Universidad de Sevilla. Departamento de Química Inorgánica |
Fecha de publicación | 2017 |
Fecha de depósito | 2022-10-06 |
Publicado en |
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Resumen | 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 ... 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. |
Cita | Guan, D., Holmes, A.J., López Serrano, J. y Duckett, S.B. (2017). Following palladium catalyzed methoxycarbonylation by hyperpolarized NMR spectroscopy: a parahydrogen based investigation. Catalysis Science & Technology, 7 (10), 2101-2109. https://doi.org/10.1039/c7cy00252a. |
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postPd_Catalysis.pdf | 473.8Kb | [PDF] | Ver/ | |