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   Articles with "base free" as a keyword



Ultrafast Self‐Charging in Acid–Base Free Aqueous Rechargeable Zinc–Quinhydrone Batteries

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recommendations! Published in 2024 at "Advanced Energy Materials"

DOI: 10.1002/aenm.202401257

Abstract: In the field of energy technologies, self‐charging batteries are receiving extensive attention. However, the existing technologies are highly dependent on the available sources of O2, have long self‐charging duration, and have complex architectures. Herein, a… read more here.

Keywords: capacity; quinhydrone; self charging; base free ... See more keywords

Mechanistic Studies on Ruthenium(II)-Catalyzed Base-Free Transfer Hydrogenation Triggered by Roll-Over Cyclometalation.

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recommendations! Published in 2017 at "ChemPlusChem"

DOI: 10.1002/cplu.201600526

Abstract: The synthesis of 2-substituted pyridine-pyrimidine ligands and their complexation with arene ruthenium(II) chloride moieties is reported. Depending on the electronic and steric influences of the ligand, the catalysts undergo CH activation by roll-over cyclometalation. This… read more here.

Keywords: cyclometalation; base free; transfer hydrogenation; roll cyclometalation ... See more keywords

Pt and Pt/Sn carbonyl clusters as precursors for the synthesis of supported metal catalysts for the base-free oxidation of HMF

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recommendations! Published in 2019 at "Applied Catalysis A: General"

DOI: 10.1016/j.apcata.2019.117279

Abstract: Abstract In the present work, Pt and Pt/Sn nanoparticles (NPs), synthesized from carbonyl cluster precursors were deposited on TiO2 and the resulting materials were tested as catalysts in selective oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic… read more here.

Keywords: carbonyl clusters; clusters precursors; oxidation; base free ... See more keywords
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The interplay of Au nanoparticles and ZnO nanorods for oxygen-promoted, base-free, complete formaldehyde reforming into H2 and CO2

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recommendations! Published in 2018 at "Catalysis Communications"

DOI: 10.1016/j.catcom.2018.08.015

Abstract: Abstract Au nanoparticles on ZnO nanorods is a sustainable catalyst for oxygen-promoted, base-free, complete formaldehyde reforming into H2 and CO2 at low temperatures. The strong metal-support interaction (SMSI) between Au and ZnO is suggested to… read more here.

Keywords: free complete; oxygen promoted; nanoparticles zno; base free ... See more keywords
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Base-free CO2 hydrogenation to formic acid over Pd supported on defective carbon nitride modified by microwave and acid treatments

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recommendations! Published in 2021 at "Journal of Catalysis"

DOI: 10.1016/j.jcat.2021.03.016

Abstract: Abstract Graphitic carbon nitride (g-C3N4) is synthesized via pyrolyzing urea by hybrid microwave annealing (HMA) to support Pd catalyst for direct CO2 hydrogenation to formic acid under a base-free condition. The HMA produces fragmented C3N4… read more here.

Keywords: formic acid; base free; hydrogenation formic; carbon nitride ... See more keywords

Hydration of Nitriles Catalyzed by Ruthenium Complexes: Role of Dihydrogen Bonding Interactions in Promoting Base-Free Catalysis.

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recommendations! Published in 2022 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.2c02058

Abstract: Ru(II) complexes of amide-phosphine-based tridentate ligands additionally containing pyridine, isoquinoline, and quinoline rings have been synthesized, and their catalytic utility for the selective hydration of nitriles to amides is explored under the base-containing as well… read more here.

Keywords: hydration nitriles; hydration; dihydrogen bonding; base free ... See more keywords

Ambient-Pressure and Base-Free Aldehyde Hydrogenation Catalyst Supported by a Bifunctional Abnormal NHC Ligand

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recommendations! Published in 2018 at "Organometallics"

DOI: 10.1021/acs.organomet.8b00729

Abstract: Catalytic aldehyde hydrogenation is an essential and routinely used chemical synthesis process in both academia and industry. However, there is a serious scarcity of efficient homogeneous catalysts for this process to work under highly demanding… read more here.

Keywords: hydrogenation; base free; base; pressure base ... See more keywords
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Enantioselective α-Chlorination Reactions of in Situ Generated C1 Ammonium Enolates under Base-Free Conditions

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recommendations! Published in 2021 at "Organic Letters"

DOI: 10.1021/acs.orglett.1c02256

Abstract: The asymmetric α-chlorination of activated aryl acetic acid esters can be carried out with high levels of enantioselectivities utilizing commercially available isothiourea catalysts under base-free conditions. The reaction, which proceeds via the in situ formation… read more here.

Keywords: free conditions; base free; enantioselective chlorination; ammonium enolates ... See more keywords

Visible-Light-Mediated Metal/Base-Free Stereoselective C-Alkyl Glycosylation via EDA Complexes of Glycosyl Xanthates and NHC-Borane.

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recommendations! Published in 2025 at "Organic letters"

DOI: 10.1021/acs.orglett.5c00957

Abstract: Owing to the toxic reagent and high temperature required, the application of xanthate-based radical chemistry has been limited. To address these challenges, we report a metal- and base-free, photoinduced strategy for stereoselective C-alkyl glycosylation via… read more here.

Keywords: eda complexes; alkyl glycosylation; metal base; eda ... See more keywords

Manganese Pincer Complexes for the Base-Free, Acceptorless Dehydrogenative Coupling of Alcohols to Esters: Development, Scope, and Understanding

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recommendations! Published in 2017 at "ACS Catalysis"

DOI: 10.1021/acscatal.6b03554

Abstract: Aliphatic PNP pincer-supported earth-abundant manganese(I) dicarbonyl complexes behave as effective catalysts for the acceptorless dehydrogenative coupling of a wide range of alcohols to esters under base-free conditions. The reaction proceeds under neat conditions, with modest… read more here.

Keywords: alcohols esters; base free; acceptorless dehydrogenative; dehydrogenative coupling ... See more keywords
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Base-Free Synthesis and Photophysical Properties of New Schiff Bases Containing Indole Moiety

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recommendations! Published in 2022 at "ACS Omega"

DOI: 10.1021/acsomega.1c06636

Abstract: Schiff bases represent an essential class in organic chemistry with antitumor, antiviral, antifungal, and antibacterial activities. The synthesis of Schiff bases requires the presence of an organic base as a catalyst such as piperidine. Base-free… read more here.

Keywords: schiff; synthesis; base free; catalyst ... See more keywords