Aldehyde‐Assisted Ruthenium(II)‐Catalyzed CH Oxygenations

Yang, Fuzi; Rauch, Karsten; Kettelhoit, Katharina; Ackermann, Lutz

doi:10.1002/anie.201405647

Cited by 173 publications

(64 citation statements)

References 54 publications

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“…First, the domino cyclization/coupling protocol could be carried out using various organometallic reagents, including monoarylboron,5a,5b monoaryltin,5a monoarylsilicon,5c and triarylbismuth5d reagents. It was surprising to note that despite the availability of these coupling methods, reports of their use in a concise strategy are conspicuously absent.…”

Section: Introductionmentioning

confidence: 99%

Challenges of “Going Nano”: Enhanced Electrochemical Performance of Cobalt Oxide Nanoparticles by Carbothermal Reduction and In Situ Carbon Coating

Bresser¹,

Paillard²,

Niehoff³

et al. 2014

ChemPhysChem

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The electrochemical performance of nano- and micron-sized Co(3)O(4) is investigated, highlighting the substantial influence of the specific surface area on the obtainable specific capacities as well as the cycling stability. In fact, Co(3)O(4) materials with a high surface area (i.e. a small particle size) show superior specific features, which are, however, accompanied by a rapid capacity fading, owing to the increased formation of an insulating polymeric surface film that results from transition-metal-catalyzed electrolyte decomposition. The simultaneous coating with carbon of Co(3)O(4) nanoparticles and in situ reduction of the Co(3)O(4) by a carbothermal route yields a CoO-Co-C nanocomposite. The formation of this material substantially enhances the long-term cycling stability and coulombic efficiency of the lithium-ion active material used. Although the metallic cobalt enhances the electronic conductivity within the electrode and remains electrochemically inactive (as revealed by in situ powder X-ray diffraction analysis), it might have a detrimental effect on the long-term cycling stability by catalytically inducing continuous electrolyte decomposition.

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Section: Introductionmentioning

confidence: 99%

Challenges of “Going Nano”: Enhanced Electrochemical Performance of Cobalt Oxide Nanoparticles by Carbothermal Reduction and In Situ Carbon Coating

Bresser¹,

Paillard²,

Niehoff³

et al. 2014

ChemPhysChem

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“…The spectral data of the so obtained compounds were in agreement with those reported. 28 2-Hydroxy-4-methylbenzaldehyde. On the basis of these results, we rationalized that R 2 is preferably functionalized in cases where the aromatic ring was substituted with electron-withdrawing groups (phenols 5 and 6), whereas substitution at R 6 prevailed when donor groups were involved (phenols 1, 3, 7 and 8).…”

Section: Methodsmentioning

confidence: 99%

A theoretical study of the Duff reaction: insights into its selectivity

2016

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The Duff reaction is one of the most employed methods for the ortho-formylation of phenols; however, not much is truly known about its mechanism. Using DFT calculations, we disclose the first theoretical study regarding the selectivity-determining step of the reaction. We have found that this stage is governed by a hydrogen bond, that gives rise to a cyclohexa-2,4-dienone intermediate and establishes the position where the formylation will take place. These findings were evaluated by analysis of the reaction outcome of several non-symmetrically substituted phenols.

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“…They further successfully applied this catalytic system to the hydroxylation of benzaldehydes, affording 2-hydroxylbenzaldehydes in moderate yields (Scheme 48) [78]. In terms of substrate scope, both electron-rich and electron-deficient benzaldehydes provided comparable yields.…”

Section: Reviewmentioning

confidence: 99%

Transition-metal-catalyzed synthesis of phenols and aryl thiols

Liu¹,

Li²,

Yan³

2017

Beilstein J. Org. Chem.

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Phenols and aryl thiols are fundamental building blocks in organic synthesis and final products with interesting biological activities. Over the past decades, substantial progress has been made in transition-metal-catalyzed coupling reactions, which resulted in the emergence of new methods for the synthesis of phenols and aryl thiols. Aryl halides have been extensively studied as substrates for the synthesis of phenols and aryl thiols. In very recent years, C–H activation represents a powerful strategy for the construction of functionalized phenols directly from various arenes. However, the synthesis of aryl thiols through C–H activation has not been reported. In this review, a brief overview is given of the recent advances in synthetic strategies for both phenols and aryl thiols.

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Aldehyde‐Assisted Ruthenium(II)‐Catalyzed CH Oxygenations

Cited by 173 publications

References 54 publications

Challenges of “Going Nano”: Enhanced Electrochemical Performance of Cobalt Oxide Nanoparticles by Carbothermal Reduction and In Situ Carbon Coating

Challenges of “Going Nano”: Enhanced Electrochemical Performance of Cobalt Oxide Nanoparticles by Carbothermal Reduction and In Situ Carbon Coating

A theoretical study of the Duff reaction: insights into its selectivity

Transition-metal-catalyzed synthesis of phenols and aryl thiols

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