2012
DOI: 10.1016/j.jcat.2011.10.013
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Abstract: Graphical abstractA catalytic system including a Pd(OAc)2-bis(oxazoline) complex bonded to 3-mercaptopropyl-functionalized silica gel is presented. The catalyst was tested for Suzuki–Miyaura reactions. The heterogeneity of the catalytic system was studied indicating that there is virtually no Pd-leaching. Furthermore, the catalyst can be reused multiple times without significant loss of stability or structure.Highlights► A Pd(OAc)2-bis(oxazoline) complex on functionalized silica gel is presented. ► The catalys… Show more

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Cited by 91 publications
(49 citation statements)
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“…Indeed, it has been demonstrated that mixed results can be obtained in some cases [5]. Critically, none of these tests could distinguish which, if not both, of the two leaching mechanisms (as depicted in Fig.…”
Section: Introductionmentioning
confidence: 98%
“…Indeed, it has been demonstrated that mixed results can be obtained in some cases [5]. Critically, none of these tests could distinguish which, if not both, of the two leaching mechanisms (as depicted in Fig.…”
Section: Introductionmentioning
confidence: 98%
“…This phenomenon is attributed to a homogeneous mechanism of the cross-coupling reaction, involving soluble Pd(II) species during the oxidative addition step. The good recyclability in batch reactions is assigned to a readsorption of palladium on the solid support upon completion of the reaction (assuming the solid support as reservoir for catalytically active palladium) [33][34][35][36]. Using continuous-flow packed-bed reactors, soluble palladium will migrate through the packed catalyst bed (as in chromatography), which leads to elution of palladium into the reaction solution, contamination of the product and finally to catalyst deactivation [37,38].…”
Section: Introductionmentioning
confidence: 99%
“…At first we experimentally ruled out the effect of leaching, as well as assessed the role of the disproportionation pathway in this process in the first instance (vide infra). Due to the large amount of Rh 3+ present in our catalysts, (section 2.6.2) and the known possibility of supported metal systems to be subjected to leaching effects, 43 the reaction mixtures were characterized via ICP-MS.…”
Section: Methodsmentioning
confidence: 99%