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|Type:||Artigo de periódico|
|Title:||Phosphine-free Heck Reaction: Mechanistic Insights And Catalysis "on Water" Using A Charge-tagged Palladium Complex|
|Author:||Dos Santos M.R.|
De Oliveira H.C.B.
|Abstract:||A novel Pd-complex with a charge tag (imidazolium cation) was applied for online monitoring of the neutral Heck reaction by electrospray ionization (tandem) mass spectrometry-ESI-MS(/MS). The results shed light on the mechanism of the reaction, whereas the charge-tagged ligand also allowed the unprecedented MS monitoring of Pd2+ reduction to Pd0. Key reaction intermediates associated with Pd catalysis could also be detected and characterized due to the presence of the charge tag on the Pd-complex. DFT calculations supported the proposed mechanism. The new charge-tagged Pd-complex is also shown to function as an active catalyst "on water" with the advantage of using cheaper and less reactive aryl chloride substrates in a phosphine-free version of the Heck reaction. © the Partner Organisations 2014.|
|Editor:||Royal Society of Chemistry|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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