Palladium-catalyzed intramolecular C–H arylation of 2-halo-<i>N</i>-Boc-<i>N</i>-arylbenzamides for the synthesis of N–H phenanthridinones

Hu, Quanfang; Gao, Tiantao; Shi, Yu; Lei, Qian; Yu, Luoting

doi:10.1039/c8ra02099j

Cited by 13 publications

(13 citation statements)

References 59 publications

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“…[95] Hu et al studied the effect of Ag on the ORR activity of LaMnO 3 -rGO composites. [96] They found that 2 wt% Ag content was optimal and by increasing it to 4 wt% the measured current density did not increase. In addition, the Ag/LaMnO 3 -rGO composite showed better stability than commercial Pt/C, which was suggested to originate from interactions between the components and from the interconnected porous structure.…”

Section: Orr On Ag Catalysts Deposited On Composite Supportsmentioning

confidence: 99%

Oxygen Reduction Reaction on Silver Catalysts in Alkaline Media: a Minireview

2018

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The development of efficient platinum‐free catalysts for electrocatalytic oxygen reduction reaction (ORR) is one of the main challenges in the fuel cell research. Silver‐based materials are highly active towards ORR in alkaline conditions and recent achievements in improving the performance of anion exchange membrane fuel cells (AEMFCs) have provoked many scientists to study these catalysts. This minireview is focused on the ORR performance of monometallic Ag catalysts and Ag‐based composites, the electrochemical oxygen reduction behaviour of Ag‐containing alloys is outside the scope of this review. The effect of the morphology of Ag nanostructures on catalysts’ ORR activity and pathway is discussed and the role of the support material is described. The performance of AEMFCs using Ag‐based cathode catalysts is also reviewed.

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Section: Orr On Ag Catalysts Deposited On Composite Supportsmentioning

confidence: 99%

Oxygen Reduction Reaction on Silver Catalysts in Alkaline Media: a Minireview

2018

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“…The coupling constants ( J ) are offered in Hz. The ortho -bromobenzoyl chlorides 2a – f were synthesized using the known method [25–26].…”

Section: Methodsmentioning

confidence: 99%

A novel and efficient synthesis of phenanthrene derivatives via palladium/norbornadiene-catalyzed domino one-pot reaction

Zhong¹,

Wu²,

Yu³

et al. 2019

Beilstein J. Org. Chem.

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Herein we report a novel palladium-catalyzed reaction that results in phenanthrene derivatives using aryl iodides, ortho-bromobenzoyl chlorides and norbornadiene in one pot. This dramatic transformation undergoes ortho-C–H activation, decarbonylation and subsequent a retro-Diels–Alder process. Pleasantly, this protocol has a wider substrate range, shorter reaction times and higher yields of products than previously reported methods.

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“…Natural minerals like zeolite, sepiolite, and attapulgite with high dispersity and more binding sites, are particularly suitable for use as both pristine adsorbents and carriers of active nanostructures. [5][6][7][8] Diatomite is one of the most promising mineral materials for removing aqueous contaminants on account of its wide distribution, highly developed porosity, low cost and well adsorption performance. 6 Derived from fossilized skeletons of diatoms, its main component is amorphous silica along with small quantities of metallic oxides.…”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7][8] Diatomite is one of the most promising mineral materials for removing aqueous contaminants on account of its wide distribution, highly developed porosity, low cost and well adsorption performance. 6 Derived from fossilized skeletons of diatoms, its main component is amorphous silica along with small quantities of metallic oxides. 9 Due to its great chemical and thermal stability, diatomite has emerged as an attractive support for stabilizing and dispersing nanomaterials (e.g.…”

Section: Introductionmentioning

confidence: 99%

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A general route to modify diatomite with niobates for versatile applications of heavy metal removal

et al. 2019

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A general solution-phase strategy is developed to synthesize nanostructure niobates such as MnNb 2 O 6 , SnNb 2 O 6 and ZnNb 2 O 6 on natural mineral diatomite for water environmental remediation. (NH 4 ) 2 C 2 O 4 aqueous solution is the key to achieve a scalable and controllable synthesis of niobate/diatomite hybrid systems, which generates NH 3 $H 2 O for surface etching activation of diatomite, and H 2 C 2 O 4 for complexation dissolution of Nb 2 O 5 , enabling the heterogeneous crystallization process to proceed with controllable growth kinetics. First principle calculations indicate that both niobium atom and niobiumoxygen species have the lowest adsorption energy on SiO 2 surface, and then induce the nucleating process of Nb-O-Mn (or Zn, Sn) networks. Cr(VI), Fe(III), and Pb(II) ions are taken as target pollutants to evaluate the water-cleaning ability of the niobate-modified diatomite. Possible mechanisms for the photoreduction of Cr(VI), physical adsorption of Fe(OH) 3 colloids, and chemisorption of Pb(II) ions are proposed on the basis of experimentally investigations. The possibility of combining the advantages of natural mineral diatomite and nanostructured niobates provides a highly robust and potential material system with versatile functionalities of heavy metal ion removal, demonstrating great promise for a wide range of water purification.

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Palladium-catalyzed intramolecular C–H arylation of 2-halo-N-Boc-N-arylbenzamides for the synthesis of N–H phenanthridinones

Abstract: Pd(t-Bu3P)2/KOAc proved to be a good combination for one-pot synthesis of N–H phenanthridinones with up to 95% yield.

Cited by 13 publications

References 59 publications

Oxygen Reduction Reaction on Silver Catalysts in Alkaline Media: a Minireview

Oxygen Reduction Reaction on Silver Catalysts in Alkaline Media: a Minireview

A novel and efficient synthesis of phenanthrene derivatives via palladium/norbornadiene-catalyzed domino one-pot reaction

A general route to modify diatomite with niobates for versatile applications of heavy metal removal

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