Dual photocatalytic effect of Ag/TiO2 site for the total reduction of N2O and selective oxidation of alcohols to valuable carbonyl compounds DOI Creative Commons
Oriane Delaunay, Audrey Denicourt‐Nowicki, Alain Roucoux

et al.

Journal of Physics and Chemistry of Solids, Journal Year: 2024, Volume and Issue: 194, P. 112242 - 112242

Published: Aug. 3, 2024

Nitrous oxide (N2O) is an important greenhouse gas emitted by anthropogenic activities, with a concentration that keeps increasing in the atmosphere. To limit its impact, thermal N2O degradation pathway traditionally considered main emitting actors. Nevertheless, activation and upgrading as oxygen source chemical transformations have recently received significant attention. Here, we propose to combine photocatalytic decomposition of into climate neutral products N2 H2O presence primary or secondary alcohols reducing agents. This dual reaction which simultaneously combines photoreduction oxidation was extended selective transformation valuable ketones aldehydes using Ag/TiO2 acetonitrile dual-reaction site, easily prepared photodeposition method loaded only 0.3 wt% silver.

Language: Английский

Low-Valent Transition Metalate Anions in Synthesis, Small Molecule Activation, and Catalysis DOI Creative Commons
Vanessa R. Landaeta, Thomas M. Horsley Downie, Robert Wolf

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(4), P. 1323 - 1463

Published: Feb. 14, 2024

This review surveys the synthesis and reactivity of low-oxidation state metalate anions d-block elements, with an emphasis on contributions reported between 2006 2022. Although field has a long rich history, chemistry transition been greatly enhanced in last 15 years by application advanced concepts complex ligand design. In recent years, potential highly reactive complexes fields small molecule activation homogeneous catalysis become increasingly evident. Consequently, exciting applications have developed, including catalytic transformations. article intends to guide reader through fascinating world low-valent metalates. The first part describes metalates stabilized assortment frameworks, carbonyls, isocyanides, alkenes polyarenes, phosphines phosphorus heterocycles, amides, redox-active nitrogen-based ligands. Thereby, will be familiarized impact different types physical chemical properties addition, ion-pairing interactions metal–metal bonding may dramatic influence structures reactivities. ramifications these effects are examined separate section. second is devoted toward inorganic molecules such as H2, N2, CO, CO2, P4 related species. It shown that use electron-rich translates into impressive hydrogenation organic reduction CO2. results discussed this illustrate being tapped for challenging processes relevance energy conversion. Therefore, it hoped serve useful resource inspire further developments dynamic research field.

Language: Английский

Citations

14
Nitrous oxide as diazo transfer reagent DOI Creative Commons
Alexandre Genoux, Kay Severin

Chemical Science, Journal Year: 2024, Volume and Issue: 15(34), P. 13605 - 13617

Published: Jan. 1, 2024

The review summarizes the use of nitrous oxide (N 2 O, ‘laughing gas’) as a diazo transfer reagent in synthetic chemistry.

Language: Английский

Citations

6
Electrochemical Reduction of N2O with a Molecular Copper Catalyst DOI Creative Commons
Jorge L. Martinez, Joseph E. Schneider,

Sophie W. Anferov

et al.

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(19), P. 12673 - 12680

Published: Sept. 14, 2023

Deoxygenation of nitrous oxide (N2O) has significant environmental implications, as it is not only a potent greenhouse gas but also the main substance responsible for depletion ozone in stratosphere. This spurred interest molecular complexes that mediate N2O deoxygenation. Natural reduction occurs via Cu cofactor, there notable dearth synthetic catalysts this process. In work, we report selective catalyst electrochemical to N2 using H2O proton source. Cyclic voltammograms show increasing concentration facilitates deoxygenation N2O, and control experiments with Zn(II) analogue verify an essential role Cu. Theory spectroscopy support metal–ligand cooperative catalysis between Cu(I) reduced tetraimidazolyl-substituted radical pyridine ligand (MeIm4P2Py = 2,6-(bis(bis-2-N-methylimidazolyl)phosphino)pyridine), which can be observed by Electron Paramagnetic Resonance (EPR) spectroscopy. Comparison biological processes suggests common theme supporting electron transfer moieties enabling Cu-mediated reduction.

Language: Английский

Citations

11
Nitrous oxide activation by picoline-derived Ni–CNP hydrides DOI Creative Commons

José Bermejo,

Isabel Ortega-Lepe,

Laura L. Santos

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(12), P. 1575 - 1578

Published: Jan. 1, 2024

Picoline-derived Ni–CNP hydride complexes activate N 2 O upon base activation, and catalyse the reduction of with pinacolborane.

Language: Английский

Citations

3
Mild and selective transformations of amines and alcohols through bioinspired oxidation with nitrous oxide or oxygen DOI Creative Commons
Bruce A. L. Sacchelli, Ruben Almeida, Abdallah G. Mahmoud

et al.

Catalysis Science & Technology, Journal Year: 2024, Volume and Issue: 14(6), P. 1512 - 1523

Published: Jan. 1, 2024

Herein we report on the biomimetic catalytic oxidation of amines to nitriles and alcohols aldehydes.

Language: Английский

Citations

2
Bioinspired copper-catalysed nitrous oxide reduction with simultaneous N–H or O–H bond oxidation DOI
Bruce A. L. Sacchelli,

Suellen M. P. Onguene,

Ruben Almeida

et al.

Catalysis Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Tuning selectivities with oxidants: O 2 oxidises methanol to the carboxylate level and N it formaldehyde level.

Language: Английский

Citations

1
Process intensification in reverse flow reactors to boost various industrial applications: A review DOI
Thomas Cole, Paul C. Ani, Ahmed Jasim

et al.

Chemical Engineering and Processing - Process Intensification, Journal Year: 2024, Volume and Issue: 208, P. 110097 - 110097

Published: Dec. 3, 2024

Language: Английский

Citations

1
Electrochemical Reduction of N2O with a Molecular Copper Catalyst DOI Creative Commons
Jorge Martínez, Joseph E. Schneider,

Sophie W. Anferov

et al.

Published: July 18, 2023

Deoxygenation of nitrous oxide (N2O) has significant environmental implications as it is not only a potent greenhouse gas but also the main substance responsible for depletion ozone in stratosphere. This spurred interest molecular complexes that mediate N2O deoxygenation. Natural reduction occurs via Cu cofactor there notable dearth synthetic catalysts this process. In work, we report selective catalyst electrochemical to N2 using H2O proton source. Cyclic voltammograms show increasing concentration facilitates deoxygenation and control experiments with Zn(II) analog verify an essential role Cu. Theory spectroscopy support metal-ligand cooperative catalysis between Cu(I) reduced tetraimidazolyl substituted radical pyridine ligand, (MeIm4P2Py = 2,6-(bis(bis-2-N-methylimidazolyl)phosphino)pyridine) which can be observed by Electron Paramagnetic Resonance (EPR) spectroscopy. Comparison biological processes suggests common theme supporting electron transfer moieties enabling Cu-mediated

Language: Английский

Citations

1
Dual Photocatalytic Effect of Ag/Tio2 Site for the Total Reduction of N2o and Selective Oxidation of Valuable Alcohols DOI
Oriane Delaunay, Audrey Denicourt‐Nowicki, Alain Roucoux

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0
Copper(I) Catalysed Diboron(4) Reduction of Nitrous Oxide DOI Creative Commons
Thomas M. Hood, Rex S. C. Charman, David J. Liptrot

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(45)

Published: July 16, 2024

Abstract A process for the catalytic reduction of nitrous oxide using NHC‐ligated copper(I) tert ‐butoxide precatalysts and B 2 pin as reductant is reported. These reactions proceed under mild conditions via copper(I)‐boryl intermediates which react with N O by facile O‐atom insertion into Cu−B bond liberate . Turnover numbers >800 can be achieved at 80 °C 1 bar O.

Language: Английский

Citations

0