Thioether–NHC bidentate manganese complexes as efficient phosphine-free catalysts for hydrogenation at room temperature DOI Creative Commons
Mariia Hruzd, Sabrina L. Kleynemeyer, Christophe Michon

et al.

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A series of four original phosphine-free thioether-NHC manganese complexes have been synthesised and fully characterized. These applied as efficient catalysts for the hydrogenation alkenes ketones at room temperature, with low catalyst loadings (TON up to 900).

Language: Английский

Manganese-catalyzed hydrogenation, dehydrogenation, and hydroelementation reactions DOI
Kuhali Das, Satyadeep Waiba, Akash Jana

et al.

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(11), P. 4386 - 4464

Published: Jan. 1, 2022

The emerging field of organometallic catalysis has shifted towards research on Earth-abundant transition metals due to their ready availability, economic advantage, and novel properties. In this case, manganese, the third most abundant transition-metal in Earth's crust, emerged as one leading competitors. Accordingly, a large number molecularly-defined Mn-complexes been synthesized employed for hydrogenation, dehydrogenation, hydroelementation reactions. regard, catalyst design is based three pillars, namely, metal-ligand bifunctionality, ligand hemilability, redox activity. Indeed, developed catalysts not only differ chelating atoms they possess but also working principles, thereby different turnover numbers product molecules. Hence, critical assessment molecularly defined manganese terms atoms, reaction conditions, mechanistic pathway, significant. Herein, we analyze complexes catalytic activity, versatility allow multiple transformations routes convert substrates target This article will be helpful get significant insight into design, aiding design.

Language: Английский

Citations

163
Advancements in multifunctional manganese complexes for catalytic hydrogen transfer reactions DOI
Kuhali Das, Milan Kr. Barman, Biplab Maji

et al.

Chemical Communications, Journal Year: 2021, Volume and Issue: 57(69), P. 8534 - 8549

Published: Jan. 1, 2021

Manganese catalyzed hydrogen transfer reactions enabled net reductions and cascade CC- CN-bond formation reactions. The success is aided by multifunctional ligand design namely metal–ligand bifunctionality, hemilability, redox non-innocence.

Language: Английский

Citations

61
Towards ligand simplification in manganese-catalyzed hydrogenation and hydrosilylation processes DOI Creative Commons

Ekaterina S. Gulyaeva,

Elena S. Osipova, Ruqaya Buhaibeh

et al.

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 458, P. 214421 - 214421

Published: Jan. 31, 2022

Language: Английский

Citations

56
Recent advances in homogeneous base-metal-catalyzed transfer hydrogenation reactions DOI
Daler Baidilov, Davit Hayrapetyan, Andrey Y. Khalimon

et al.

Tetrahedron, Journal Year: 2021, Volume and Issue: 98, P. 132435 - 132435

Published: Sept. 8, 2021

Language: Английский

Citations

52
Manganese—New prominent actor in transfer hydrogenation catalysis DOI Creative Commons
Karim Azouzi, Dmitry A. Valyaev, Stéphanie Bastin

et al.

Current Opinion in Green and Sustainable Chemistry, Journal Year: 2021, Volume and Issue: 31, P. 100511 - 100511

Published: May 8, 2021

Language: Английский

Citations

48
Manganese-Catalyzed Anti-Markovnikov Hydroamination of Allyl Alcohols via Hydrogen-Borrowing Catalysis DOI
Kuhali Das, Koushik Sarkar, Biplab Maji

et al.

ACS Catalysis, Journal Year: 2021, Volume and Issue: 11(12), P. 7060 - 7069

Published: June 2, 2021

Controlling the selectivity in a hydroamination reaction is an extremely challenging yet highly desirable task for diversification of amines. In this article, selective formal anti-Markovnikov allyl alcohols presented. It enables versatile synthesis valuable γ-amino alcohol building blocks. A phosphine-free Earth's abundant manganese(I) complex catalyzed under hydrogen-borrowing conditions. vast range aliphatic, aromatic amines, drug molecules, and natural product derivatives underwent successful with primary secondary allylic excellent functional group tolerance (57 examples). The catalysis could be performed on gram scale has been applied molecules. mechanistic studies revealed metal–ligand bifunctionality as well hemilability ligand backbone key design principle success catalysis.

Language: Английский

Citations

48
Ammonia borane-enabled hydrogen transfer processes: Insights into catalytic strategies and mechanisms DOI Creative Commons
Wenfeng Zhao, Hu Li, Heng Zhang

et al.

Green Energy & Environment, Journal Year: 2022, Volume and Issue: 8(4), P. 948 - 971

Published: April 5, 2022

Transfer hydrogenation (TH) with in situ generated hydrogen donor is of great importance reduction reactions, and an alternative strategy to traditional processes involving pressurized molecular hydrogen. Ammonia borane (NH3BH3, AB) a promising material storage, it has attracted much attention reductive organic transformations owing its high activity, good atom economy, non-toxicity, sustainability, ease transport storage. This review focuses on summarizing the recent progress AB-mediated TH reactions diverse substrates including nitro compounds, nitriles, imines, alkenes, alkynes, carbonyl compounds (ketones aldehydes), carbon dioxide, N- O-heterocycles. Syntheses protocols (metal-containing metal-free), effect reaction parameters, product distribution, variation reactivity are surveyed, mechanism each action mode AB as well structure-activity relationships discussed detail. Finally, perspectives presented highlight challenges opportunities for AB-enabled unsaturated compounds.

Language: Английский

Citations

38
Well-Defined NNS-Mn Complex Catalyzed Selective Synthesis of C-3 Alkylated Indoles and Bisindolylmethanes Using Alcohols DOI
Avijit Mondal, Rahul Sharma, Bishal Dutta

et al.

The Journal of Organic Chemistry, Journal Year: 2022, Volume and Issue: 87(6), P. 3989 - 4000

Published: March 8, 2022

Herein, we demonstrated Mn-catalyzed selective C-3 functionalization of indoles with alcohols. The developed catalyst can also furnish bis(indolyl)methanes from the same set substrates under slightly modified reaction conditions. Mechanistic studies reveal that is going via a borrowing hydrogen pathway. To highlight practical utility, diverse range including nine structurally important drug molecules are synthesized. Furthermore, introduced one-pot cascade strategy for synthesizing functionalized directly 2-aminophenyl ethanol and alcohol.

Language: Английский

Citations

37
Recent Developments in Manganese, Iron and Cobalt Homogeneous Catalyzed Synthesis of Primary Amines via Reduction of Nitroarenes, Nitriles and Carboxamides DOI
Jiajun Wu, Christophe Darcel

Advanced Synthesis & Catalysis, Journal Year: 2023, Volume and Issue: 365(7), P. 948 - 964

Published: Feb. 18, 2023

Abstract The preparation of primary amines attracts huge attention in the molecular synthetic community. Indeed, play a crucial role chemistry as they are important substructures amount drug molecules, agrochemicals, dyes and materials. Compared to stoichiometric reductions using metal hydride based reagents, catalyzed reduction nitroarenes, nitriles carboxamides appears be an attractive option, mainly when associated first row transition metals such manganese, iron, or cobalt. In this short review, we illustrate progress achieved homogeneous hydrogenation, hydrogen transfer, borrowing hydrosilylation carboxamides. magnified image

Language: Английский

Citations

18
Advancements in catalysts for selective hydrogenation of nitriles to amines DOI

Xiaohong Song,

Mingqiang Liu, Kai Xu

et al.

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 103, P. 268 - 287

Published: Jan. 18, 2025

Language: Английский

Citations

1