Heteroleptic dirhodium(II,II) acetato-bipyridyl complexes: Evaluation as catalyst precursors for hydroformylation reactions DOI Creative Commons

Stephen De Doncker,

Gregory S. Smith, Siyabonga Ngubane

et al.

Applied Catalysis A General, Journal Year: 2023, Volume and Issue: 667, P. 119440 - 119440

Published: Oct. 1, 2023

The synthesis of cationic bimetallic 'pseudo-paddlewheel' dirhodium(II,II) acetato-bipyridyl complexes the type [Rh2(OAc)2(bis-4,4'-R-bipy)2]2+ containing either acetate (AcO-) or hexafluorophosphate (PF6-) counter ions is described. In both series, 4 and 4' positions each bipyridyl ligand are substituted such that R = H, CF3 OMe (complexes 1-3 for AcO- 4-6 PF6- derivatives). As catalyst precursors hydroformylation reaction, were initially evaluated using 1-octene as a substrate. complex which displayed greatest chemoselectivity toward aldehyde was further precursor styrene, cyclohexene 7-tetradecene substrates. A correlation between product distributions in terms chemo- regioselectivity reaction versus axial site interaction delineated. Recyclability achieved through suitable modification substituent ion, culminating simplistic method post-catalytic collection with minimal reduction catalytic activity over 5 cycles.

Language: Английский

Unified approaches in transition metal catalyzed C(sp3)–H functionalization: recent advances and mechanistic aspects DOI
Jagrit Grover,

Amal Tom Sebastian,

S.K. Maiti

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Direct alteration of unactivated C–H bonds organic building blocks.

Language: Английский

Citations

1
Dirhodium: carbene transformations and beyond DOI

Wu Rui,

Dong Zhu, Shifa Zhu

et al.

Organic Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 10(11), P. 2849 - 2878

Published: Jan. 1, 2023

Dirhodium-catalyzed transformations, not limited to carbene and nitrene transfer reactions, are reviewed, including cycloisomerization, hetero-Diels–Alder (HDA) ene arylation, radical oxidation reactions C–H activation, etc .

Language: Английский

Citations

21
Advances in Selective Allylic C—H Amination of Internal Olefins DOI

Yuan She,

Shu‐Yu Zhang, Le Wang

et al.

Chinese Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: 45(2), P. 531 - 531

Published: Jan. 1, 2025

Language: Английский

Citations

0
Nitrogen-Based Organofluorine Functional Molecules: Synthesis and Applications DOI
Shuai Liu, Jun Zhou, Lu Yu

et al.

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

Published: April 22, 2025

Fluorine and nitrogen form a successful partnership in organic synthesis, medicinal chemistry, material sciences. Although fluorine-nitrogen chemistry has long rich history, this field received increasing interest made remarkable progress over the past two decades, driven by recent advancements transition metal organocatalysis photochemistry. This review, emphasizing contributions from 2015 to 2023, aims update state of art synthesis applications nitrogen-based organofluorine functional molecules chemistry. In dedicated sections, we first focus on fluorine-containing reagents organized according type groups attached nitrogen, including N-F, N-RF, N-SRF, N-ORF. review also covers nitrogen-linked building blocks, catalysts, pharmaceuticals, agrochemicals, underlining these components' broad applicability growing importance modern

Language: Английский

Citations

0
Synthesis of 1,5-Diamino-Substituted 1,3-Dienes via Rhodium(II)-Catalyzed Tandem Reactions of 1-Cyclopropylethylarenes DOI

X.‐F. LIN,

Beiqi Yang,

Yuanhua Wang

et al.

Organic Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 18, 2025

Herein, (E,E)-1,5-diamino-1,3-dienes are stereoselectively synthesized from substituted aryl derivatives via a rhodium(II)-catalyzed C(sp3)-H functionalization involving cascade of cyclopropane ring expansion, cyclobutene formation, to 1,3-diene conversion, and regioselective diamination. Mechanistic studies show this one-pot process proceeds through hydrogen atom transfer (HAT), radical-polar crossover (RPC), elimination, electrocyclic ring-opening, radical addition, underscoring rhodium(II)'s role in radical-mediated catalysis beyond traditional rhodium(II) nitrenoid chemistry.

Language: Английский

Citations

0
Recent Advances in the Catalytic Synthesis of 1,3‐Diamines DOI

Beiqi Yang,

Aiwen Yu, Yuanhua Wang

et al.

ChemCatChem, Journal Year: 2023, Volume and Issue: 15(11)

Published: March 22, 2023

Abstract 1,3‐Diamines are important for many biologically active molecules, but there have been fewer studies on the synthesis of 1,3‐diamines than those 1,2‐diamines. Relatively speaking, not sufficient reports non‐catalytic methods in this direction. Among various methods, catalytic construction diamine products from nitrogen‐containing substrates is most straightforward, it suffers need to pre‐synthesize and therefore narrowly used. For non‐specialized substrates, direct C−N bonds by metal‐ or non‐metal‐catalyzed C−H functionalization undoubtedly efficient approach. This method currently focused monofunctionalization, less has reported simultaneous multiple bonds. Here, we summarize some innovative that developed past five years, encompassing directions such as reaction non‐metal catalyzed reaction.

Language: Английский

Citations

4
Cobalt-catalyzed amination of aziridines and azetidines toward 1,2- and 1,3-diamines DOI
Ling‐Chao Cheng, Zhihua Wang,

Xinglei He

et al.

Organic & Biomolecular Chemistry, Journal Year: 2024, Volume and Issue: 22(13), P. 2554 - 2557

Published: Jan. 1, 2024

A cobalt-catalyzed ring opening, nucleophilic amination of aziridines and azetidines with N -fluorosulfonamides has been established toward a wide range 1,2- 1,3-diamine derivatives in moderate to good yields under mild conditions.

Language: Английский

Citations

1
Dirhodium-catalyzed one-step cascade intermolecular 1,4-diamination via cyclopropanation DOI

Qi Yang,

Xinyu Liu, Song Qin

et al.

Organic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(17), P. 4769 - 4778

Published: Jan. 1, 2024

A step-economical 1,4-diamine synthesis from aromatic hydrocarbons via arylcyclopropane intermediates is reported. Using a Rh 2 /NFSI system, multiple C(sp 3 )–H bonds are activated in single-step cascade, showing the catalyst's versatility.

Language: Английский

Citations

1
Ni‐Co‐based bimetal organic framework as superior electrode material for hydrogen evolution reaction and supercapacitors DOI
Shiva Bhardwaj, Rishabh Srivastava, Teddy Mageto

et al.

Energy Storage, Journal Year: 2023, Volume and Issue: 6(1)

Published: Nov. 30, 2023

Abstract Metal‐organic frameworks (MOFs) possess several desirable properties, including a homogeneous crystal structure, variable porosity, high surface area, and notable adsorption affinity, making them highly promising contenders for deployment as electrode materials in supercapacitors (SCs) water electrolyzers, which are acknowledged the ever‐increasing demand instantaneous energy. Herein, we report rationally assembled Ni‐Co‐based bimetallic MOF compounds using glutaric acid an organic ligand low‐temperature hydrothermal treatment that surmounts electrocatalytic electrochemical charge storage activity alkaline medium. The NiCo‐MOF surpassed hydrogen evolution reaction (HER) among other as‐synthesized materials, exhibiting least overpotential of 182 mV at 10 mA/cm 2 current density, showed splendid kinetics with turnover frequency 2.86 s −1 , higher stability after 1000 HER cycles 1 M KOH. Furthermore, impetuses were employed SC application displayed highest specific capacitance 978 F/g than Ni‐MOF (706 F/g) Co‐MOF (91 A/g density. Theoretical studies exhibited optimal electronic coupling synergistic effect due to Ni‐Co sites enhances overall properties NiCo‐MOF. Therefore, enhancing its performance concerning water‐splitting storage. This study showcases novel approach producing ultrathin flexible MOF‐based material enrich SCs.

Language: Английский

Citations

2
Rhodium(II)-Catalyzed Desaturative [3+2] Tandem Cyclization of Arylcycloalkanes with β-Dicarbonyls DOI
Xinyu Liu, Qi Yang, Qiwei Wang

et al.

Organic Letters, Journal Year: 2023, Volume and Issue: 25(14), P. 2498 - 2503

Published: March 31, 2023

Synthetically important scaffolds, fused tricyclic frameworks containing a 2,3-cyclo[b]dihydrofuran unit, play crucial role in drug discovery. In this study, we demonstrate that rhodium(II)/N-fluorobenzenesulfonimide can catalyze the situ generation of highly reactive alkene intermediates from commonly accessible alkanes, which undergo intermolecular [3+2] tandem cyclization with simultaneously generated β-dicarbonyl radical to synthesize series unit quaternary carbon center.

Language: Английский

Citations

1