期刊
CATALYSIS SCIENCE & TECHNOLOGY
卷 7, 期 10, 页码 2101-2109出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cy00252a
关键词
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资金
- China Scholarship Council
- Spanish MEC Consolider Ingenio research programme [2010-ORFEO-CSD2007-00006]
- Spanish Ministry of Education (MECD)
- Spanish Ministry of Education (Subprograma Estatal de Movilidad)
- Spanish Ministry of Education (Plan Estatal de Investigacion Cientifica y Tecnica y de Innovacion)
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 H-1 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.
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