Synthesis and catalytic activity of POCOP ruthenium(II) and iron(II) pincer complexes derived from 1,3- and 1,7-dihydroxynaphthalenes DOI

Juan Carlos Temich-Escribano,

Manuel Alejandro Roque Ramires,

Samanta Ortiz-Rojas

et al.

Journal of Coordination Chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 17

Published: Dec. 31, 2024

Ruthenium(II) and iron(II) POCOP pincer complexes have readily been obtained from ligands derived the 1,3- 1,7-dihydroxynaphtalene isomers. The two ruthenium(II) isomers displayed remarkable catalytic activity for Friedländer annulation, reaction was tolerant to a wide array of electron-withdrawing -donating substituted ketones. reactions produced selectively quinoline derivatives in conversions up 99% at low catalysts loadings with turnover numbers close 1000. iron also exhibited notable activity, albeit lower than their ruthenium counterparts. These results mark significant advancement developing derivatives.

Language: Английский

Catalytic transfer hydrogenation of substituted nitro-aromatics through in-situ generated Co(0) nanoparticle from Co(II) complexes supported by pentadentate ligands DOI
Anshu Singh, Ovender Singh, Ankur Maji

et al.

Molecular Catalysis, Journal Year: 2024, Volume and Issue: 555, P. 113835 - 113835

Published: Feb. 1, 2024

Language: Английский

Citations

5
Recent Advances in the Use of 2‐Aminobenzyl Alcohols in the Synthesis of Quinolines, Quinazolines and Other N‐Heterocycles DOI
Fatemeh Doraghi,

Farzad Gilaninezhad,

Somaye Karimian

et al.

Advanced Synthesis & Catalysis, Journal Year: 2024, Volume and Issue: 366(10), P. 2142 - 2164

Published: Jan. 17, 2024

Abstract N‐Heterocyclic compounds, in particular, quinolines and quinazolines are frequently used medicinal chemistry. Therefore, the direct clean synthesis of these valuable scaffolds has been a great interest for many years. 2‐Aminobenzyl alcohols as an alternative reactant instead unstable expensive 2‐aminobenzaldehydes can be construction N‐fused heterocycles including quinolines, quinazolines, oxazines, thiazines, selenazines, imidazoles, diazepines, etc. In this review article, we have discussed recent developments use 2‐aminobenzyl diverse heterocycles.

Language: Английский

Citations

4
A well-defined phosphine free metal-ligand cooperative route for N-alkylation of aromatic amines via activation of renewable alcohols catalyzed by a NNN pincer cobalt(II) complexes DOI
Rahul Saini,

Prashant Kukreti,

Rahul Chauhan

et al.

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Two cobalt( ii ) complexes C1 and C2, supported by an NNN pincer, were synthesized, characterized with various techniques. These utilized to study catalytic activity in the N -alkylation of amines via borrowing hydrogen strategy.

Language: Английский

Citations

0
A sustainable strategic approach for N-alkylation of amines with activation of alcohols triggered via a hydrogen auto-transfer reaction using a Pd(ii) complex: evidence for metal–ligand cooperativity DOI

Virendra Kumar Chaudhary,

Prashant Kukreti,

Keshav Sharma

et al.

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(20), P. 8740 - 8749

Published: Jan. 1, 2024

This work describes a new well-defined, air-stable, phosphine free palladium(II) [Pd(L)Cl] (1) catalyst. catalyst was utilized for

Language: Английский

Citations

3
Role of ancillary ligands in selectivity towards acceptorless dehydrogenation versus dehydrogenative coupling of alcohols and amines catalyzed by cationic ruthenium(ii)–CNC pincer complexes DOI
Rahul Kumar Singh, Dibya Yadav, Shilpi Misra

et al.

Dalton Transactions, Journal Year: 2023, Volume and Issue: 52(43), P. 15878 - 15895

Published: Jan. 1, 2023

An unexpected reversal in catalytic activity for acceptorless dehydrogenative coupling compared to alcohol dehydrogenation has been observed using a series of cationic Ru(II)-CNC pincer complexes with different ancillary ligands. In continuation our study 1a-6a, new bulky N-wingtips [Ru(CNCiPr)(CO)(PPh3)Br]PF6 (1b), [Ru(CNCCy)(CO)(PPh3)Cl]PF6 (1c), [Ru(CNCCy)(CO)(PPh3)H]PF6 (2c), [Ru(CNCiPr)(PPh3)2Cl]PF6 (3b), [Ru(CNCCy)(PPh3)2Cl]PF6 (3c), [Ru(CNCiPr)(PPh3)2H]PF6 (4b), [Ru(CNCCy)(PPh3)2H]PF6 (4c), [Ru(CNCiPr)(DMSO)2Cl]PF6 (6b), and [Ru(CNCCy)(DMSO)2Cl]PF6 (6c) [CNCR = 2,6-bis(1-alkylimidazol-2-ylidene)-pyridine] have synthesized the activities their N-methyl analogues transfer hydrogenation cyclohexanone benzyl alcohol. Furthermore, all utilized as catalysts reaction amines. While were found be line previously trend based on ligands (CO > COD DMSO PPh3), reaction, containing PPh3 performed better CO Based NMR mass investigation reactions, plausible mechanism suggested explain difference its during reaction. substrate scope wide range amines explored, including synthesizing some pharmaceutically important imines. All characterized by various spectroscopic techniques, structures 4b 6b confirmed single-crystal X-ray diffraction technique.

Language: Английский

Citations

5
Visible light induced generation of nitric oxide from designed ruthenium nitrosyl complex and studies on antibacterial activity DOI
Sain Singh, Pankaj Kumar Chaudhary, Ramasare Prasad

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1310, P. 138323 - 138323

Published: April 13, 2024

Language: Английский

Citations

1
Facile synthesis of benzoxazole derivatives by a multi-component reaction catalysed by copper complexes capable of generating phenoxyl radical complex DOI
Virendra Kumar Chaudhary, Sain Singh,

Kapil Kumar

et al.

New Journal of Chemistry, Journal Year: 2023, Volume and Issue: 47(41), P. 18995 - 19004

Published: Jan. 1, 2023

Cu( ii ) complexes were designed, synthesized, and characterized. The molecular structures of the determined by X-ray crystallography. Catalytic activity studies on these afforded benzoxazole derivatives via a radical pathway.

Language: Английский

Citations

2
The Catalysts-Based Synthetic Approaches to Quinolines: A Review DOI

Shrishti Tripathi,

Rajnish Kumar, Avijit Mazumder

et al.

Medicinal Chemistry, Journal Year: 2024, Volume and Issue: 20(10), P. 921 - 937

Published: June 26, 2024

The most common heterocyclic aromatic molecule with potential uses in industry and medicine is quinoline. Its chemical formula C9H7N, it has a distinctive double-ring structure pyridine moiety fused benzene ring. Various synthetic approaches synthesize quinoline derivatives. These include solvent-free approach, mechanochemistry, ultrasonic, photolytic microwave catalytic approaches. One of the important catalyst-based approach which different catalysts are used such as silver-based catalysts, titanium-based nanoparticle new iridium barium-based iron-based gold-based nickel-based catalyst, some metal-based photocatalyst, α-amylase biocatalyst, by using multifunctional metal-organic framework-metal tandem catalyst etc. In present study, we summarized catalyst-promoted reactions that have been reported for synthesis Hopefully, study will be helpful researchers.

Language: Английский

Citations

0
Light-enhancing ketone transfer hydrogenation catalyzed by diphosphine phenanthroline ruthenium complexes DOI
Gustavo Henrique Cicero Masson, Maurizio Ballico, Beatriz E. Goi

et al.

Molecular Catalysis, Journal Year: 2024, Volume and Issue: 564, P. 114337 - 114337

Published: June 27, 2024

Language: Английский

Citations

0
Synthesis and catalytic activity of POCOP ruthenium(II) and iron(II) pincer complexes derived from 1,3- and 1,7-dihydroxynaphthalenes DOI

Juan Carlos Temich-Escribano,

Manuel Alejandro Roque Ramires,

Samanta Ortiz-Rojas

et al.

Journal of Coordination Chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 17

Published: Dec. 31, 2024

Ruthenium(II) and iron(II) POCOP pincer complexes have readily been obtained from ligands derived the 1,3- 1,7-dihydroxynaphtalene isomers. The two ruthenium(II) isomers displayed remarkable catalytic activity for Friedländer annulation, reaction was tolerant to a wide array of electron-withdrawing -donating substituted ketones. reactions produced selectively quinoline derivatives in conversions up 99% at low catalysts loadings with turnover numbers close 1000. iron also exhibited notable activity, albeit lower than their ruthenium counterparts. These results mark significant advancement developing derivatives.

Language: Английский

Citations

0