Iron Porphyrin Catalyzed Insertion Reaction of <i>N</i>-Tosylhydrazone-Derived Carbenes into X–H (X = Si, Sn, Ge) Bonds

Wang, Enhui; Ping, Yuan‐Ji; Li, Zongrui; Qin, Hongling; Xu, Zhen‐Jiang; Che, Chi‐Ming

doi:10.1021/acs.orglett.8b01931

Cited by 39 publications

(31 citation statements)

References 39 publications

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“…Alternatively, GLY conversion by electrochemical oxidation has recently attracted much attention. [9][10][11][12][13][14][15][16] Electro-oxidation of GLY is a totally green process, which does not involve any toxic oxidants. More importantly, this method affords a facile route to achieve a high selectivity towards certain target compounds by optimizing catalyst structures and experimental conditions (e. g., applied potential, electrolyte pH and temperature).…”

Section: Introductionmentioning

confidence: 99%

Sustainable Conversion of Glycerol into Value‐Added Chemicals by Selective Electro‐Oxidation on Pt‐Based Catalysts

2018

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Electro‐oxidation of glycerol affords a totally green route to produce high value‐added chemicals. Herein, we report a study on glycerol electro‐oxidation over a series of graphene nanosheet supported Pt (Pt/GNS), PtNi (PtNi/GNS), PtRu (PtRu/GNS), PtRh (PtRh/GNS), PtRuNi (PtRuNi/GNS), and PtRhNi (PtRhNi/GNS) catalysts in alkaline solution. The activity of the catalysts was evaluated by cyclic voltammetry, linear sweep voltammetry, and chronoamperometric measurements. The PtRh/GNS and PtRhNi/GNS catalysts exhibited superior activity in terms of higher current densities and lower onset potentials. The products of glycerol oxidation formed at potentials of −0.4, −0.1, and 0.2 V, were systematically analyzed by high performance liquid chromatography (HPLC). Five compounds as products from glycerol electro‐oxidation catalyzed by the prepared materials were found, including glyceraldehyde, glycolic acid, tartronic acid, glyceric acid and oxalate acid. The product distribution at the different potentials was investigated for all catalysts. A maximum glycolic acid selectivity of 65.4 % was obtained for the Pt/GNS catalyst at 0.2 V while a maximum glyceric acid selectivity of 47.7 % was achieved using the PtNi/GNS catalyst at −0.1 V. It was found that the introduction of Ru facilitated the formation of C3 products while the addition of Rh was beneficial for the formation of C2 products. Based on HPLC results, the pathways of glycerol electro‐oxidation by the prepared catalysts were proposed.

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Section: Introductionmentioning

confidence: 99%

Sustainable Conversion of Glycerol into Value‐Added Chemicals by Selective Electro‐Oxidation on Pt‐Based Catalysts

2018

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“…[26] Moreover, graphene/P4VP composites have been used in pH sensors [27] and as catalysts for glycerol oxidation. [28] These results suggest that P4VP would be an excellent matrix material for synthesizing GNRs. Here, we report the synthesis of GNRs in acetone and P4VP using the laser ablation in liquid (LAL) technique (Figure 1a).…”

Section: Introductionmentioning

confidence: 91%

Top‐Down Synthesis of Hollow Graphene Nanostructures for Use in Resistive Switching Memory Devices

Anoop

Kim

Lee

et al. 2017

Adv Elect Materials

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Hollow nanostructures exhibit a wide range of potential applications because of the quantum confinement effect that arises from the narrow width of such nanostructures. It is challenging to synthesize hollow nanostructures of 2D materials. A facile top‐down approach is presented for synthesizing high‐quality hollow graphene nanostructures from highly oriented pyrolytic graphite target. Hollow graphene nanostructures composed of few‐layered graphene nanorings (GNRs) are synthesized in acetone and poly(4‐vinylpyridine) (P4VP) using the laser ablation in liquid technique. Density functional theory calculations of the layered GNRs indicate that their bandgap converges with an increase in the number of layers. To demonstrate the feasibility of the synthesized NRs for use in device applications, flexible two‐terminal devices with a Pt/GNRs‐P4VP/indium tin oxide structure are fabricated; the devices exhibit excellent memory characteristics, with the ON/OFF ratio being 2 × 104 and the retention time being 105 s. These results suggest that synthesizing uniform bandgap‐engineered GNRs in organic media through laser ablation is an excellent method for realizing high‐density, low‐cost nonvolatile memories in a scalable manner.

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“…It has been reported that 1,3-dicarbonyl compounds could be applied as alkyl radical precursors under the oxidative conditions, which further added to C=C bond furnish C-C bond formation products. [59][60][61] In 2018, our group reported a convenient radical cascade cyclization of 2-(allyloxy)arylaldehydes 47 with 1,3-dicarbonyl compounds 48 to synthesize 1,5-/1,3-dicarbonyl-containing chroman-4-ones 49 in the presence of AgNO 3 /K 2 S 2 O 8 under mild reaction conditions (Scheme 10). [62] The obtained 1,5-/1,3-dicarbonyl-containing chroman-4-ones 49 could further be used in subsequent transformations.…”

Section: Silver-promoted Reactionsmentioning

confidence: 99%

Radical Reactions for the Synthesis of 3‐Substituted Chroman‐4‐ones

Xiong

Wei

et al. 2020

Eur J Org Chem

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Radical cascade cyclizations of o‐allyloxybenzaldehydes have emerged as a powerful strategy for the synthesis of 3‐substituted chroman‐4‐ones. This minireview summarizes the incorporation of various functional groups into the C3‐position of chroman‐4‐ones by employing appropriate radical precursors through transition‐metal‐free systems, silver‐catalyzed systems, or visible‐light‐promoted systems.

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Iron Porphyrin Catalyzed Insertion Reaction of N-Tosylhydrazone-Derived Carbenes into X–H (X = Si, Sn, Ge) Bonds

Cited by 39 publications

References 39 publications

Sustainable Conversion of Glycerol into Value‐Added Chemicals by Selective Electro‐Oxidation on Pt‐Based Catalysts

Sustainable Conversion of Glycerol into Value‐Added Chemicals by Selective Electro‐Oxidation on Pt‐Based Catalysts

Top‐Down Synthesis of Hollow Graphene Nanostructures for Use in Resistive Switching Memory Devices

Radical Reactions for the Synthesis of 3‐Substituted Chroman‐4‐ones

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