Copper immobilized onto the polyvinyl imidazole coated magnetic graphene oxide as an efficient heterogeneous catalyst for A3 and C–X cross-coupling reactions DOI
Z. Lasemi,

Seyed Mostafa Khosroanjom,

Mahmood Tajbakhsh

et al.

Research on Chemical Intermediates, Journal Year: 2024, Volume and Issue: 50(10), P. 4795 - 4816

Published: Aug. 24, 2024

Language: Английский

Waste Glass Tablets Cu(0)NP-Doped: An Easily Recyclable Catalyst for the Synthesis of Propargylamines and Nitrophenol Reduction DOI Creative Commons

Nicoli Catholico,

Sumbal Saba, Jamal Rafique

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Language: Английский

Citations

0
Propargyl Amines by Aldehyde-Amine-Acetylene Coupling Mediated by Ag(I) and Cu(I) Complexes of Super Bulky N-Heterocyclic Carbenes: Unveiling the Role of the Super Bulky Ligands in the Coupling Reaction DOI
Rajesh Manne,

Sunita Sharma,

Shreyata Dey

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1316, P. 139022 - 139022

Published: June 15, 2024

Language: Английский

Citations

3
Design of Efficient Benzimidazole-Derived N-Heterocyclic Carbene Ag(I) Catalysts for Aldehyde-Amine-Alkyne Coupling DOI
Zahid Nawaz, Nevın Gürbüz,

M. Naveed Zafar

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1318, P. 139239 - 139239

Published: July 8, 2024

Language: Английский

Citations

3
Encapsulation of mixed-valence copper oxide nanoparticles in aluminum carboxymethylcellulose composite microspheres: an efficient synergistic catalyst for boosting aldehyde–alkyne–amine coupling reactions DOI
Liang Xiao, Zhian Xu, Xuetao Fan

et al.

Cellulose, Journal Year: 2023, Volume and Issue: 30(14), P. 8691 - 8708

Published: July 31, 2023

Language: Английский

Citations

6
Accessing Heteroannular Benzoxazole and Benzimidazole Scaffolds via Carbodiimides Using Azide–Isocyanide Cross-Coupling as Catalyzed by Mesoionic Singlet Palladium Carbene Complexes Derived from a Phenothiazine Moiety DOI Creative Commons
Shreyata Dey, Prasenjit Ghosh

ACS Omega, Journal Year: 2023, Volume and Issue: 8(12), P. 11039 - 11064

Published: March 14, 2023

The coupling of aryl and aliphatic azides with isocyanides yielding carbodiimides (8–17) were efficiently catalyzed by well-defined structurally characterized trans-(MIC)PdI2(L) [MIC = 1-CH2Ph-3-Me-4-(CH2N(C6H4)2S)-1,2,3-triazol-5-ylidene, L NC5H5 (4), MesNC (5)], trans-(MIC)2PdI2 (6), cis-(MIC)Pd(PPh3)I2 (7) type palladium complexes, which incidentally mark the first instances use mesoionic singlet carbene complexes for said application. As observed from product yields, catalytic activity varied in order 4 > 5 ∼ 6 7 these complexes. A detailed mechanistic studies indicated that catalysis proceeded via a palladium(0) (4a–7a) species. Using representative precatalyst azide–isocyanide was successfully extended to synthesizing two different bioactive heteroannular benzoxazole (18–22) benzimidazole (23–27) derivatives, thereby broadening scope

Language: Английский

Citations

5
Accessing Bioactive Hydrazones by the Hydrohydrazination of Terminal Alkynes Catalyzed by Gold(I) Acyclic Aminooxy Carbene Complexes and Their Gold(I) Arylthiolato and Gold(III) Tribromo Derivatives: A Combined Experimental and Computational Study DOI Creative Commons
Jyoti Singh,

Sunita Sharma,

A. P. Prakasham

et al.

ACS Omega, Journal Year: 2023, Volume and Issue: 8(23), P. 21042 - 21073

Published: May 30, 2023

Hydrohydrazination of terminal alkynes with hydrazides yielding hydrazones 5-14 were successfully catalyzed by a series gold(I) acyclic aminooxy carbene complexes the type [{(4-R2-2,6-t-Bu2-C6H2O)(N(R1)2)}methylidene]AuCl, where R2 = H, R1 Me (1b); Cy (2b); t-Bu, (3b); (4b). The mass spectrometric evidence corroborated existence catalytically active solvent-coordinated [(AAOC)Au(CH3CN)]SbF6 (1-4)A species and acetylene-bound [(AAOC)Au(HC≡CPhMe)]SbF6 (3B) proposed catalysis cycle. hydrohydrazination reaction was employed in synthesizing several bioactive hydrazone compounds (15-18) anticonvulsant properties using representative precatalyst (2b). DFT studies favored 4-ethynyltoluene (HC≡CPhMe) coordination pathway over p-toluenesulfonyl hydrazide (NH2NHSO2C6H4CH3) pathway, that proceeded crucial intermolecular hydrazide-assisted proton transfer step. (1-4)b synthesized from {[(4-R2-2,6-t-Bu2-C6H2O)(N(R1)2)]CH}+OTf- (1-4)a treatment (Me2S)AuCl presence NaH as base. reactivity yielded gold(III) [{(4-R2-2,6-t-Bu2-C6H2O)(N(R1)2)}methylidene]AuBr3 (1-4)c upon molecular bromine perfluorophenylthiolato derivatives, [{(4-R2-2,6-t-Bu2-C6H2O)(N(R1)2)}methylidene]AuSC6F5 (1-4)d, C6F5SH.

Language: Английский

Citations

5
Air stable N-heterocyclic carbene silver complexes: synthesis, characterization, and antibacterial activity DOI
Deniz Demir Atlı, Didem Aksu

Journal of Coordination Chemistry, Journal Year: 2023, Volume and Issue: 76(11-12), P. 1497 - 1506

Published: June 18, 2023

AbstractA new benzimidazolium salt containing a 2,5-dimethylbenzyl substituent and six N-heterocyclic carbene (NHC) silver complexes were prepared. The characterized by NMR, FTIR, LC-MS spectroscopic methods elemental analyses. They are stable in solution for week. antibacterial properties of the Ag(I) against two Gram-positive Gram-negative bacteria investigated. Inhibition zone minimum inhibitory concentration (MIC) data establish that these NHC-Ag(I) possess activities; 2b showed highest activity overall bacteria.Keywords: Benzimidazolium saltN-heterocyclic carbenesilver complexantibacterial studies Disclosure statementNo potential conflict interest was reported authors.

Language: Английский

Citations

5
Directly accessing the alkyne-aldehyde-amine (A3) coupling catalytic cycle using molecular gold(I) acetylide complexes for synthesizing propargylamines and amino indolizines DOI
Jyoti Singh,

Purva Dua,

Gopalan Rajaraman

et al.

Molecular Catalysis, Journal Year: 2024, Volume and Issue: 565, P. 114387 - 114387

Published: July 20, 2024

Language: Английский

Citations

1
Convenient access to amidines by mesoionic singlet palladium carbene catalyzed hydrazone-isocyanide-amine (HIA) coupling: Scope and mechanistic insights DOI
Shreyata Dey,

Chandra Sekhar Nettem,

Gopalan Rajaraman

et al.

Molecular Catalysis, Journal Year: 2023, Volume and Issue: 553, P. 113735 - 113735

Published: Dec. 9, 2023

Language: Английский

Citations

2
Research Progress on Pincer N-Heterocyclic Carbene Metal Complexes DOI Open Access
Liangru Yang,

Mengli Guo,

Jinwei Yuan

et al.

Chinese Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 43(6), P. 2002 - 2002

Published: Jan. 1, 2023

As a type of novel ligands featuring special structure and properties that can be easily regulated, N-heterocyclic carbenes (NHCs) have attracted much research attention in recent years.Various NHC metal complexes with typical been synthesized utilized widely the fields catalysis, synthesis, materials, pharmaceuticals, etc.Here, progress on synthesis applications pincer containing heteroatoms N, P, S, O, Se, etc. C different hybrid state is summarized.

Language: Английский

Citations

1