Electrochemical carbonyl reduction on single-site M–N–C catalysts
2023年9月30日 · Electrochemical conversion of organic compounds holds promise for advancing sustainable synthesis and catalysis. This study explored electrochemical carbonyl hydrogenation on single-site M–N–C...
Carbonyl-linked cobalt polyphthalocyanines as high-selectivity catalyst …
2024年1月9日 · One type of carbonyl-linked cobalt polyphthalocyanine (CL-CoPPc) is synthesised as catalysts for use in electrochemical carbon dioxide (CO 2) reduction (ECR). Carbonyl linkages can decrease the intermolecular π–π stacking, and serve as intramolecular “gullies” to impede proton transfer and the hydrogen evolution reaction (HER).
Electrochemical carbonyl reduction on single-site M–N–C catalysts
2023年9月30日 · Here, the authors investigate the electrochemical reduction of the model reactants formaldehyde, acetaldehyde, and acetone on single-site M–N–C catalysts (M = Fe, Co and Ni), gaining mechanistic insight into the role that the nature of the metal center plays on the selectivity of these carbonyl reduction reactions.
Counterintuitive chemoselectivity in the reduction of carbonyl ...
2024年6月3日 · We discuss reductions, including the controlled reduction of ureas, amides and esters to aldehydes, as well as chemoselective reductions of carbonyl groups, including the reduction of ureas...
Journal of Catalysis - ScienceDirect
4 天之前 · Consequently, several alternative carbonyl sources have been developed, including chloroformates, [19] TFBen, [20] Mo(CO) [6,21] etc. Compared with CO gas, these alternative carbonyl sources exhibit superior operability and safety. Oxalyl chloride has been reported as a cheap and readily available reagent for the carbonylation reaction.
Manipulating C-C coupling pathway in electrochemical CO2 reduction …
2024年11月26日 · Manipulation C-C coupling pathway is of great importance for selective CO2 electroreduction but remain challenging. Herein, two model Cu-based catalysts, by modifying Cu nanowires with Ag ...
Reduction of carbonyl compounds via hydrosilylation catalyzed by …
2021年6月14日 · We describe here a highly chemoselective Mn (I)-based PNP pincer catalyst for the hydrosilylation of aldehydes and ketones employing polymethylhydrosiloxane (PMHS) as inexpensive hydrogen donor. The reduction of polarized double bonds such as carbonyl motifs is among the most important transformations in organic synthesis.
Electroreduction of Carbonyl Compounds Catalyzed by a …
2022年7月6日 · Aromatic, aliphatic, and further functionalized ketones and aldehydes were converted to the corresponding alcohols in decent to excellent yields, with a catalyst loading of only 1%. The protocol is selective toward ketones and aldehydes over non-conjugated C═C bonds, esters, and carboxylic acids.
Metal‐Catalyzed Carbonylation Reactions with CO2: An Update
2023年8月10日 · The active Mn-complex (16), formed by a K-mediated reduction of the pre-catalyst, featuring a ligand-centered radical, promotes homolytic activation of the Si−H bond in PhSiH 3, leading to the formation of an active silyl radical and a Mn−H complex.
The reduction of multiple bonds by a metal catalyst with the aid of a hydrogen donor is known as hydrogen transfer! Hydrogen transfer is advantageous on account of increased safety and chemical flexibility! Two mechanistic pathways exhist in hydrogen transfer reactions Review of H-Transfer: Chem. Rev. 1992, 92, 1051 M O H O LL RL Me RSMe