Study of Deactivation in Suzuki Reaction of Polymer-Stabilized Pd Nanocatalystsстатья
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Аннотация:The reaction of Suzuki-Miyaura (S-M) cross-coupling between aryl halides and arylboronic acids
is one of the most common and eective methods for the synthesis of biaryls, which are important
intermediates in the synthesis of pharmaceuticals, ligands, and polymers [1,2]. It is known that
this reaction is a palladium-catalyzed condensation reaction, which proceeds via a Pd(0)/Pd(II) cycle
involving the oxidative addition of the starting components and the reductive elimination of the
resulting reaction products. The loss of the catalyst activity is an important issue of all the cross-coupling
reactions. Various processes (e.g., aggregation, dissociation, leaching, etc.) can contribute to changes
of the catalyst nature and, as a result, its activity and selectivity [3–5].