Sustainable catalysis with fluxional acridine-based PNP pincer complexes DOI Creative Commons
Sayan Kar, David Milstein

Chemical Communications, Journal Year: 2022, Volume and Issue: 58(23), P. 3731 - 3746

Published: Jan. 1, 2022

Because of the widespread use fossil fuels and resulting global warming, development sustainable catalytic transformations is now more important than ever to obtain our desired building materials with least carbon footprint waste production. Many (de)hydrogenation reactions, including CO2 reduction, H2 carrier systems, others, have been reported using molecular pincer complexes. A specific subset complexes containing a central acridine donor flanking CH2PR2 ligands, known as acridine-based PNP complexes, exhibit special reactivities that are not imitable by other such pyridine-based or (R2PCH2CH2)2NH type ligands. The goal this article highlight unique then investigate how these allow catalyse many reactions traditional cannot catalyse. To end, we will initially go over synthesis structural features labile coordination N observed fac-mer fluxionality. Following that, distinct reactivity patterns their acids water be discussed. Finally, discuss reaction systems developed thus far, notable selective primary alcohols amines ammonia, N-heteroaromatic from oxidation liberation, conclude future possible directions. We hope systemic study presented here aid researchers in developing further based on

Language: Английский

Recent advances in pincer–nickel catalyzed reactions DOI
Vinay Arora,

Himani Narjinari,

Pran Gobinda Nandi

et al.

Dalton Transactions, Journal Year: 2021, Volume and Issue: 50(10), P. 3394 - 3428

Published: Jan. 1, 2021

The utility of pincer−nickel complexes in catalyzing reactions such as cross−coupling, oxidation, (de)hydrogenation, hydrofunctionalization, C−H activation and CO2 functionalization has been reviewed from a synthetic mechanistic point view.

Language: Английский

Citations

54
Metal–ligand cooperative approaches in homogeneous catalysis using transition metal complex catalysts of redox noninnocent ligands DOI
Rakesh Mondal, Amit Kumar Guin, Gargi Chakraborty

et al.

Organic & Biomolecular Chemistry, Journal Year: 2021, Volume and Issue: 20(2), P. 296 - 328

Published: Dec. 6, 2021

Catalysis offers a straightforward route to prepare various value-added molecules starting from readily available raw materials. The catalytic reactions mostly involve multi-electron transformations. Hence, compared the inexpensive and 3d-metals, 4d 5d-transition metals get an extra advantage for performing as heavier transition prefer two-electron redox events. However, sustainable development, these expensive scarce heavy metal-based catalysts need be replaced by inexpensive, environmentally benign, economically affordable 3d-metal catalysts. In this regard, metal-ligand cooperative approach involving metal complexes of noninnocent ligands attractive alternative. synergistic participation redox-active during electron transfer events allows transformations using interesting chemical 5d-metals well. Herein we summarize up-to-date literature report on approaches few selected types reactions.

Language: Английский

Citations

51
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

49
Rational Design of First-Row Transition Metal Complexes as the Catalysts for Oxidation of Arenes: A Homogeneous Approach DOI

Anjana Rajeev,

Mani Balamurugan, Muniyandi Sankaralingam

et al.

ACS Catalysis, Journal Year: 2022, Volume and Issue: 12(16), P. 9953 - 9982

Published: Aug. 1, 2022

Researchers have always been intrigued by one-step selective hydroxylation of aromatic compounds since achieving adequate selectivity toward the target product and avoiding overoxidation are challenging. However, naturally available oxygenase enzymes efficiently selectively perform such transformations under normal atmospheric conditions. Inspired occurring enzymes, researchers undertaken numerous attempts to catalyze oxidation arenes using homogeneous heterogeneous catalysts. In this regard, first-row transition metal complexes considered as candidates due their abundance redox characteristics. Therefore, review focuses on catalyst design strategies improve efficiency arene illustrates distinctive approaches reported in area employing complexes.

Language: Английский

Citations

35
Sustainable catalysis with fluxional acridine-based PNP pincer complexes DOI Creative Commons
Sayan Kar, David Milstein

Chemical Communications, Journal Year: 2022, Volume and Issue: 58(23), P. 3731 - 3746

Published: Jan. 1, 2022

Because of the widespread use fossil fuels and resulting global warming, development sustainable catalytic transformations is now more important than ever to obtain our desired building materials with least carbon footprint waste production. Many (de)hydrogenation reactions, including CO2 reduction, H2 carrier systems, others, have been reported using molecular pincer complexes. A specific subset complexes containing a central acridine donor flanking CH2PR2 ligands, known as acridine-based PNP complexes, exhibit special reactivities that are not imitable by other such pyridine-based or (R2PCH2CH2)2NH type ligands. The goal this article highlight unique then investigate how these allow catalyse many reactions traditional cannot catalyse. To end, we will initially go over synthesis structural features labile coordination N observed fac-mer fluxionality. Following that, distinct reactivity patterns their acids water be discussed. Finally, discuss reaction systems developed thus far, notable selective primary alcohols amines ammonia, N-heteroaromatic from oxidation liberation, conclude future possible directions. We hope systemic study presented here aid researchers in developing further based on

Language: Английский

Citations

32