Molybdenum catalyzed homogeneous hydrogenation reaction: Recent innovations in catalysts design, modes of activation and reaction mechanisms DOI
Shu-Fen Hou, Ailing Zhang, Chunling Xin

et al.

Journal of Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 115984 - 115984

Published: Jan. 1, 2025

Language: Английский

Recent Advances in Homogeneous Catalysis via Metal–Ligand Cooperation Involving Aromatization and Dearomatization DOI Open Access
Takuya Shimbayashi, Ken‐ichi Fujita

Catalysts, Journal Year: 2020, Volume and Issue: 10(6), P. 635 - 635

Published: June 7, 2020

Recently, an increasing number of metal complex catalysts have been developed to achieve the activation or transformation substrates based on cooperation between atom and its ligands. In such “cooperative catalysis,” ligand not only is bound metal, where it exerts steric electronic effects, but also functionally varies structure during elementary processes catalytic reaction. this review article, we focus metal–ligand involving aromatization dearomatization ligand, thus introducing newest developments examples homogeneous reactions.

Language: Английский

Citations

61
Chemoselectivity change in catalytic hydrogenolysis enabling urea-reduction to formamide/amine over more reactive carbonyl compounds DOI Creative Commons
Takanori Iwasaki, Kazuki Tsuge, Naoki Naito

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: June 12, 2023

The selective transformation of a less reactive carbonyl moiety in the presence more ones can realize straightforward and environmentally benign chemical processes. However, such is highly challenging because reactivity compounds, one most important functionalities organic chemistry, depends on substituents carbon atom. Herein, we report an Ir catalyst for hydrogenolysis urea derivatives, which are least affording formamides amines. Although formamide, as well ester, amide, carbamate substituents, considered to be than urea, proposed tolerated these groups reacted with chemoselective manner. chemo- regioselective allows development strategy recycling polyurea resins.

Language: Английский

Citations

20
Metal–Ligand Cooperativity of the Calix[4]pyrrolato Aluminate: Triggerable C−C Bond Formation and Rate Control in Catalysis DOI Creative Commons
Fabian Ebner, Lukas M. Sigmund, Lutz Greb

et al.

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 59(39), P. 17118 - 17124

Published: June 23, 2020

Abstract Metal‐ligand cooperativity (MLC) had a remarkable impact on transition metal chemistry and catalysis. By use of the calix[4]pyrrolato aluminate, [ 1 ] − , which features square‐planar Al III we transfer this concept into p ‐block fully elucidate its mechanisms by experiment theory. Complementary to metal‐based MLC ( aromatization upon substrate binding), binding in occurs dearomatization ligand. The aluminate trapps carbonyls formation C−C Al−O bonds, but products maintain full reversibility outstanding dynamic exchange rates. Remarkably, bonds can be formed or cleaved addition removal lithium cations, permitting unprecedented control over system's constitutional state. Moreover, metal‐ligand cooperative interaction allows twist kinetics catalytic hydroboration reactions unique sense. Ultimately, work describes evolution an anti‐van't Hoff/Le Bel species from their being as structural curiosity application reagent catalyst.

Language: Английский

Citations

49
N-Heterocyclic silylenes as ambiphilic activators and ligands DOI Open Access

Mirjam J. Krahfuß,

Udo Radius

Dalton Transactions, Journal Year: 2021, Volume and Issue: 50(20), P. 6752 - 6765

Published: Jan. 1, 2021

Recent developments of the use N-heterocyclic silylenes (NHSis), higher homologues Arduengo-carbenes, as ambiphilic activators and ligands are highlighted a comparison NHSi with NHC phosphine is provided.

Language: Английский

Citations

34
Activation of Si–H and B–H bonds by Lewis acidic transition metals and p-block elements: same, but different DOI Creative Commons
Pablo Ríos, Amor Rodríguez, Salvador Conejero

et al.

Chemical Science, Journal Year: 2022, Volume and Issue: 13(25), P. 7392 - 7418

Published: Jan. 1, 2022

In this

Language: Английский

Citations

26
Combining metal–metal cooperativity, metal–ligand cooperativity and chemical non-innocence in diiron carbonyl complexes DOI Creative Commons
Cody B. van Beek, Nicolaas P. van Leest, Martin Lutz

et al.

Chemical Science, Journal Year: 2022, Volume and Issue: 13(7), P. 2094 - 2104

Published: Jan. 1, 2022

The PNNP expanded pincer ligand can bind two iron centers in close proximity and display heterolytic homolytic metal–ligand cooperativity.

Language: Английский

Citations

24
Reactivity of a Strictly T‐Shaped Phosphine Ligated by an Acridane Derived NNN Pincer Ligand DOI Creative Commons

Aaron J. King,

Josh Abbenseth, José M. Goicoechea

et al.

Chemistry - A European Journal, Journal Year: 2023, Volume and Issue: 29(39)

Published: April 12, 2023

Abstract The steric tuning of a tridentate acridane‐derived NNN pincer ligand allows for the isolation strictly T‐shaped phosphine that exhibits ambiphilic reactivity. Well‐defined phosphorus‐centered reactivity towards nucleophiles and electrophiles is reported, contrasting with prior reports on this class compounds. Reactions oxidants are also described. latter result in two‐electron oxidation phosphorus atom from +III to +V accompanied by strong geometric distortion ligand. By contrast, cooperative activation E−H (HCl, HBcat, HOMe) bonds proceeds retention redox state. When using H 2 O as substrate, reaction results full disassembly its constituent atoms, highlighting potential platform small molecule reactions.

Language: Английский

Citations

14
Bisgermylene-Stabilized Stannylone: Catalytic Reduction of Nitrous Oxide and Nitro Compounds via Element-Ligand Cooperativity DOI

Binglin Lei,

Fanshu Cao,

Ming Chen

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(26), P. 17817 - 17826

Published: May 23, 2024

This study describes the synthesis, structural characterization, and catalytic application of a bis(germylene)-stabilized stannylone (

Language: Английский

Citations

5
Regiocontrol in the oxidative Heck reaction of indole by ligand-enabled switch of the regioselectivity-determining step DOI Creative Commons
Yujie Wang, Chen‐Hui Yuan,

De-Zhao Chu

et al.

Chemical Science, Journal Year: 2020, Volume and Issue: 11(40), P. 11042 - 11054

Published: Jan. 1, 2020

Ligand-enabled switch of the regioselectivity-determining step allowed for efficient regiocontrol in aerobic oxidative Heck reaction indole.

Language: Английский

Citations

34
Cobalt-Catalyzed Selective Dearomatization of Pyridines to N–H 1,4-Dihydropyridines DOI
Maofu Pang,

Le‐Le Shi,

Yufang Xie

et al.

ACS Catalysis, Journal Year: 2022, Volume and Issue: 12(9), P. 5013 - 5021

Published: April 13, 2022

Catalytic reduction of pyridines to N–H 1,4-dihydropyridines is exceptionally challenging because they are essential intermediates form tetrahydropyridines. Using a facile dihydrogen source H3N·BH3 activate the pyridine ring in situ, we have achieved selective transfer hydrogenation nicotinate derivatives by cobalt-amido cooperative catalysis. The reactions operate smoothly under mild conditions produce variety with high chemo- and regioselectivity. This catalytic method also provides practical protocol regenerate Hantzsch analogues after delivery H2.

Language: Английский

Citations

21