Control over borrowing hydrogen and acceptorless dehydrogenative coupling process for the Co(iii)–NHC catalysed chemoselective alkylation and cyclisation of 1,2-phenylenediamine with alcohols DOI

Misba Siddique,

Biswaranjan Boity,

Arnab Rit

et al.

Catalysis Science & Technology, Journal Year: 2023, Volume and Issue: 13(24), P. 7172 - 7180

Published: Jan. 1, 2023

Chemoselective alkylation and cyclisation of 1,2-phenylenediamine with alcohols via control cobalt–NHC catalysed borrowing hydrogen acceptorless dehydrogenative coupling is achieved by tuning the triazole substituent NHC ligand system.

Language: Английский

Regio- and Stereoselective Reductive Coupling of Alkynes and Crotononitrile DOI
Kun Cui, Yanlin Li, Gongqiang Li

et al.

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(50), P. 23001 - 23009

Published: Dec. 8, 2022

A new regio- and stereoselective reductive coupling of alkynes crotononitrile has been developed via visible light organophotoredox cobalt dual catalysis. variety enantioenriched homoallylic nitriles bearing a stereodefined trisubstituted alkene have easily synthesized with good to excellent (up >20:1 rr), stereo- (>20:1 E/Z), enantioselectivity 98% ee) control under mild conditions. The corresponding nitrile products were smoothly converted into various chiral building blocks. Remarkably, simple organic base together water utilized as hydrogen sources in this photoinduced reaction.

Language: Английский

Citations

39
Hydration reactions catalyzed by transition metal–NHC (NHC = N-heterocyclic carbene) complexes DOI Creative Commons
Pengcheng Gao, Michal Szostak

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 485, P. 215110 - 215110

Published: March 30, 2023

Language: Английский

Citations

23
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
Anti-cancer property and DNA binding interaction of first row transition metal complexes: A decade update DOI

Upala Dasmahapatra,

Barnali Maiti, Mohammed Mujahid Alam

et al.

European Journal of Medicinal Chemistry, Journal Year: 2024, Volume and Issue: 275, P. 116603 - 116603

Published: June 19, 2024

Language: Английский

Citations

9
N-heterocyclic carbene-palladium complex immobilized on Co-MOF 74 microrods as a highly selective catalyst for Suzuki–Miyaura cross-coupling DOI Creative Commons
Duygu Hacıefendioğlu, Alï Tuncel

Reaction Kinetics Mechanisms and Catalysis, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Language: Английский

Citations

1
Cobalt complex with a tetradentate aminopyridine ligand: a single-component and efficient catalytic system for the cycloaddition reactions of CO2 and epoxides DOI
Ning Yu, Bowen Zhang, Shuyan Liang

et al.

New Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A cobalt complex with a tetradentate aminopyridine ligand catalyzes the cycloaddition reactions of CO 2 and epoxides, constituting single-component, efficient solvent-free system.

Language: Английский

Citations

1
Application of first-row transition metal complexes bearing 1,2,3-triazolylidene ligands in catalysis and beyond DOI Creative Commons
Wowa Stroek, Martin Albrecht

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(12), P. 6322 - 6344

Published: Jan. 1, 2024

Triazole-derived N-heterocyclic carbenes, available via click reactions, are versatile ligands for first-row transition metals, leading to complexes with attractive photochemical properties and catalytic activity, some defining the state-of-the-art.

Language: Английский

Citations

8
Well-Defined Low-Valent Cobalt Complexes in Catalysis: An Overview DOI
Cassandre C. Bories, Alexandre Sodreau, Marion Barbazanges

et al.

Organometallics, Journal Year: 2024, Volume and Issue: 43(9), P. 895 - 923

Published: April 18, 2024

For decades, transition-metal catalysts based on noble metals have proven to be highly efficient for a wide range of organic transformations. However, due their low abundance and volatile price the use such is now critical economy. Thus, more sustainable alternatives mandatory abundant first-row transition are becoming interesting challengers. Among them low-valent 3d appeared as best candidates, they intrinsically reactive than high-valent ones. this reactivity implies that these complexes often generated in situ, putting further away aspect atom economy waste. To circumvent get insight mechanism reaction, concept well-defined has emerged. In area, its historic development trouble associated with preparation other complexes, cobalt appears an important player. review, after definition what complex presentation (pre)catalyst also known "single-component" strategy we will report syntheses applications catalysis classified by oxidation state ligand environment.

Language: Английский

Citations

7
Amine-functionalized bifunctional CoIII-NHC complexes: highly effective phosphine-free catalysts for the α-alkylation of nitriles DOI

Biswaranjan Boity,

Misba Sidiqque,

Arnab Rit

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(23), P. 3142 - 3145

Published: Jan. 1, 2024

Newly developed amine functionalized NHC-supported Co

Language: Английский

Citations

6
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

16