Supported Palladium Nanoparticles Catalyzed Ortho-Directed C–C Coupling Reaction via a Pd0/PdII/PdIV Catalytic Cycle

Zhang, Dongling; Zhaorigetu, Bao; Bao, Yong‐Sheng

doi:10.1021/acs.jpcc.5b04735

Cited by 18 publications

(11 citation statements)

References 90 publications

(147 reference statements)

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“…Based on our research on the supported PdNPs catalyzed C-H activation reaction, 19,20 here we verify that the organofunctionalized kaolin supported PdNPs can be used to drive the ortho-directed C-H activation reaction of arylpyrazoles. To our knowledge, this transformation represents the rst example of heterogeneous transition-metal catalyzed directed C-H acylation of 1-arylpyrazole.…”

Section: -20mentioning

confidence: 61%

Palladium nanoparticles supported on organofunctionalized kaolin as an efficient heterogeneous catalyst for directed C–H functionalization of arylpyrazoles

Yang

Bao

2017

RSC Adv.

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Section: -20mentioning

confidence: 61%

Palladium nanoparticles supported on organofunctionalized kaolin as an efficient heterogeneous catalyst for directed C–H functionalization of arylpyrazoles

Yang

Bao

2017

RSC Adv.

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“…For this reason, small graphene flakes (e.g., commercial graphene nanoplatelets, 5 nm thickness, and <2 μm diameter) are advantageous. , Suffice to say that, although the electrocatalytic activities of the oxygenated graphene-based CEs have not yet matched the conventional Pt, they are within 10% difference for the iodide/triiodide redox mediator. Conceptually, a high efficiency CE requires the maximization of the graphene oxygen content, vacancies and defects, conductivity, and transparency (in the case of irradiation from the cathode side). , Unfortunately, these parameters cannot be optimized independently since the first two factors oppose the trend of the latter two when subjected to high temperature annealing . The beneficial electrocatalytic activity of oxygenated moieties and defects on graphene-based CE can be extended to the Co(III/II) bipyridine complex mediator for high open circuit voltage cells.…”

Section: Applications Of Functionalized Graphene-based Compositesmentioning

confidence: 65%

“…Conceptually, a high efficiency CE requires the maximization of the graphene oxygen content, vacancies and defects, conductivity, and transparency (in the case of irradiation from the cathode side). 323,324 Unfortunately, these parameters cannot be optimized independently since the first two factors oppose the trend of the latter two when subjected to high temperature annealing. 325 The beneficial electrocatalytic activity of oxygenated moieties and defects on graphene-based CE can be extended to the Co(III/II) bipyridine complex mediator for high open circuit voltage cells.…”

Section: •−mentioning

confidence: 99%

Functionalized-Graphene Composites: Fabrication and Applications in Sustainable Energy and Environment

Gong

Liu

Li³

et al. 2016

Chem. Mater.

196

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Graphene, including pristine graphene and its analogues of graphene oxide and reduced graphene oxide, is revolutionizing the way we design high performance devices, particularly in the areas of sustainable energy and environmental technologies. From environmental remediation and sensing to energy conversions and storage, there are many successful cases of graphene applications. Instead of being a standalone working material, graphene is almost always coupled with another active material as a composite. With its high surfaceto-bulk ratio, efficient heat transfer, and electron conduction, the interfacing with graphene not only helps to overcome such limitations in the bare working material but actually accentuates them. To achieve this, the strategy of surface functionalization of graphene, with either soft matters (e.g., organics, molecular linkers, proteins) or solid inorganic matters (e.g., metal nanoparticles, oxide semiconductors), holds the key to enabling the fabrication of high performance composites. The resultant architectures, in which the graphene is applied to, yield the highest achievable properties and should be unique to the specific applications. This Review provides a bottom-up account encompassing the functionalization of graphene to the design of graphene-based composites and also their selected applications in high performance systems relevant to energy and the environment.

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“…Pd@γ‐Al 2 O 3 was used to ortho‐directed C−C coupling reaction between 2‐phenylpyridines and aldehydes for the selective synthesis of aromatic ketones (Scheme 25B). The catalyst can be readily recovered and reused for five cycles [143] …”

Section: Functionalization Of C−h Bond Via C−h Activationmentioning

confidence: 99%

Supported Metal Nanoparticles Assisted Catalysis: A Broad Concept in Functionalization of Ubiquitous C−H Bonds

et al. 2021

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Supported metal nanoparticles (NPs) catalysed chemical transformations have been a vital area of research over the last few decades. Catalysis by supported NPs not only plays a pivotal role in the production of fine chemicals such as coupling products, heterocycles, alcohols, carbonyl compounds, acids, etc. but also provides sustainable chemical processes. The use of supported metal NPs provides a much prosperous basis than conventional homogeneous and heterogeneous catalysts for tuning reactivity, recyclability, high productivity and environment benevolent alternative for C−H functionalization. Consequently, as evidenced in the literature, various support materials such as silica, metal oxides, zeolites, carbon‐based materials, bio‐materials, magnetic materials, and MOFs have been moderately investigated in order to exploit their benefit in supported metal NPs catalyzed various C−H functionalizations. This review aims to summarize recent advances in the development of new support materials or novel supported NPs catalytic systems for functionalization of the challenging C−H bond under heterogeneous conditions. Furthermore, a deep scientific understanding of the mechanisms, active species, role of base and oxidants for these systems are also discussed to gain insight into the advance in the rational design of efficient catalytic systems, which may serve as an inspiration to researchers in their future work.

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Supported Palladium Nanoparticles Catalyzed Ortho-Directed C–C Coupling Reaction via a Pd⁰/Pd^II/Pd^IV Catalytic Cycle

Cited by 18 publications

References 90 publications

Palladium nanoparticles supported on organofunctionalized kaolin as an efficient heterogeneous catalyst for directed C–H functionalization of arylpyrazoles

Palladium nanoparticles supported on organofunctionalized kaolin as an efficient heterogeneous catalyst for directed C–H functionalization of arylpyrazoles

Functionalized-Graphene Composites: Fabrication and Applications in Sustainable Energy and Environment

Supported Metal Nanoparticles Assisted Catalysis: A Broad Concept in Functionalization of Ubiquitous C−H Bonds

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