Air-stable Pd(0) catalyst bearing dual phosphine ligands: a detailed evaluation of air stability and catalytic property in cross-coupling reactions.

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2020
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Abstract
We have synthesised an air-stable Pd(0) catalyst bearing donor and acceptor phosphine ligands (Complex 1). This study revealed the long-term air stability and catalytic property of Complex 1 as a catalyst for cross-coupling reactions, where it was stable in air for eight months. DFT calculations revealed that the acceptor ligands in Complex 1 decreased the HOMO energy level, which provided the observed air stability. Complex 1 successfully served as a catalyst for direct C-H arylation reactions and Suzuki-Miyaura cross-coupling reactions, and catalysed the reaction of a relatively inactive substrate, 2-chrolopyridine, which could not be achieved by conventional, air-stable Pd(0) catalysts. Isolating the intermediates of the coupling reactions revealed that each intermediate possessed the donor ligand (PCy3), which was determined to be responsible for imparting the high catalytic activity exhibited by Complex 1.
Reference Key
sato2020airstabledalton Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Sato, Ryota;Kanbara, Takaki;Kuwabara, Junpei;
Journal Dalton transactions (Cambridge, England : 2003)
Year 2020
DOI
10.1039/d0dt02744h
URL
Keywords
zinc oxide photodetectors microstructures heterogeneous nucleation high-quality crystal arrays

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