Application of a dimeric P,C-palladacycle complex as a catalyst in Suzuki and Heck cross-coupling reactions

From Chemical Serendipity to Translational Chemistry: New Findings in the Reactivity of Palladacycles

In the world of science, in particular the section concerning the field of chemistry, when the results encountered during the experiment do not meet our expectations, our shrewdness may play an important role to open up new unexplored fields that could be much more interesting than what we were seeking. In those cases, our research undergoes an unforeseen shift, delivering novel and challenging results that may altogether alter our point of view and our future work. We have then struck serendipity. Specifically, in our investigation linked to palladacycles we have found that the new trends in their reactivity, as well as in their structure, have been, in many cases, related to this experience, broadening our research scope within this field. Herein, we describe our most relevant findings, which have shed new light upon the reactivity of palladacycles, thus opening new routes that lead to novel unexpected structures.

A palladium complex immobilized onto a magnetic GO-MnFe2O4 surface as an effective and recyclable catalyst for the reduction of p-nitrophenol

A recyclable magnetic palladium complex catalyst immobilized onto a GO-MnFe₂O₄ surface was synthesized and characterized for the reduction of p-nitrophenol.

Zeolite Y nanosheet assembled palladium catalysts with high catalytic activity and selectivity in the vinylation of thiophenes

Zeolite Y nanosheets with a micro-meso-macroporous structure were synthesized, and applied in the assembly of a Pd catalyst (Pd/NS-Y) for direct vinylation of thiophenes with high activity and selectivity, as compared to Pd(OAc)2, Pd(NO3)2, and Pd(PPh3)4 catalysts. This feature should be assigned to the highly dispersed Pd(δ+) (δ < 2) species in Pd/NS-Y, which are more active than Pd(2+).

Palladacycle catalysis: an innovation to the Suzuki–Miyaura cross-coupling reaction

A new approach to the Suzuki cross-coupling reaction based on the catalysis of a thiosemicarbazone palladacycle is presented.

Pyridinyl functionalized MCM-48 supported highly active heterogeneous palladium catalyst for cross-coupling reactions

Pyridinyl functionalized MCM-48-supported Pd-catalyst efficiently (0.013–0.025 mol%) promoted Heck, Suzuki and Sonogashira cross-coupling reactions. Moreover, the catalyst was reused five times without significant loss of its activity.

Palladacycle-catalyzed cascade reaction of bicyclic alkenes with alkynyl imines: synthesis of polycyclic 5H-benzo[b]azepines

A new methodology to prepare a six–seven membered ring [4,5,0] heterobicyclic system has been developed via a palladacycle-catalyzed cascade reaction of bicyclic alkenes and alkynyl imines.