Facile three-component preparation of benzodiazepine derivatives catalyzed by zinc sulfide nanoparticles via grinding method

Naeimi, Hossein; Foroughi, Hossein

doi:10.1007/s11164-015-2254-4

Cited by 15 publications

(3 citation statements)

References 42 publications

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“…Also, PL spectrum is sensitive to synthetic conditions, size, and shape of NPs. Broadening of the emission peak could be attributed to both size distribution and an increase in the surface states owing to the increase in surface to volume ratio for ZnS NPs [47]. From literature, it can be noticed that the PL of uncapped ZnS NPs shows only a broad peak between 350 and 550 nm [48].…”

Section: Pl Analysismentioning

confidence: 95%

Synthesis and characterization of N, O-donor Schiff base capped ZnS NPs as a sensor for fluorescence selective detection of Fe 3+, Cr 2+ and Cd 2+ ions

Ayodhya¹,

Veerabhadram²

2018

MoEM

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We report the simple synthesis of zinc sulfide nanoparticles (ZnSNPs) by a co-precipitation method using Schiff base, (2-[(4-methoxy-phenylimino)-methyl]-4-nitro phenol) as a capping agent. Here, Schiff base is also used as N, O-donor ligand to control the morphology of NPs and fluorescence interactions. The formation of ZnSNPs and their optical, structural, thermal properties and morphologies were studied by means of UV–vis DRS, fluorescence, FTIR, XRD, SEM, TEM, zeta potential and TGA. The optical properties and quantum confinement effect of the products were confirmed by means of spectroscopic measurements. XRD and TEM image shows that the synthesized ZnSNPs have cubic structures with a diameter of about less than 10 nm. The prepared ZnSNPs exhibited as a selective probe detection of Fe3+, Cr2+ and Cd2+ ions by fluorometrically and the emission band which disappears in the presence of increasing concentrations of Fe3+, Cr2+ and Cd2+ ions. Based on the fluorescence quenching of the NPs in the presence of metal ion of interest, the feasibility of their determinations was examined according to the Stern-Volmer equation. Our work suggested that Schiff base capped ZnSNPs could be a potential selective sensor in the detection of heavy metal ions.

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Section: Pl Analysismentioning

confidence: 95%

Synthesis and characterization of N, O-donor Schiff base capped ZnS NPs as a sensor for fluorescence selective detection of Fe 3+, Cr 2+ and Cd 2+ ions

Ayodhya¹,

Veerabhadram²

2018

MoEM

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“…The results of the presented protocol were compared to that of recent reports. [38][39][40][41][42] As shown in Table 2, the presented methodology has several advantages over the reported methodologies, such as a green chemical approach, straightforward and rapid procedure, without the need of any metals and a simple work-up protocol. A possible mechanism for the formation of benzodiazepine derivatives is shown in Scheme 2.…”

Section: A R T I C L E I N F Omentioning

confidence: 99%

Deep eutectic solvent as a highly efficient reaction media for the one-pot synthesis of benzo-fused seven-membered heterocycles

Shaabani

Hooshmand

Nazeri

et al. 2016

Tetrahedron Letters

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The combination of choline chloride and urea as a deep eutectic solvent has been applied to the synthesis of benzo-fused seven-membered heterocycles, including tricyclic 1,4-benzodiazepines and 1,4-benzoxazepines, via a one-pot, three-component reaction. The reaction conditions are relatively mild and do not require additional metals, acid catalysts or organic solvents. The protocol has the advantages of excellent yields in short reaction times, an easy workup procedure and being environmentally friendly.

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“…Nano zinc sulphide‐catalysed synthesis of benzodiazepine was developed in which various aldehydes, benzene‐1,2‐diamines and dimedone underwent reaction using 10 mol % of nano ZnS at 70 °C via grinding procedure affording good yields (Scheme ) . In the absence of nano ZnS the reaction could give only 30 % yield of the product.…”

Section: Heterocyclic Compoundsmentioning

confidence: 99%

Zinc‐Catalysed Multi‐Component Reactions: An Overview

Neetha¹,

Rohit²,

Saranya³

et al. 2020

ChemistrySelect

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Multi-component reactions (MCRs) have gathered much attention recently due to their superior efficiency, exceptional selectivity and simplicity. Synthesis of various compounds with maximum efficiency and almost zero by-products are their major highlights. Zinc is an easily accessible, economically feasible and environmentally viable catalyst. This first review in this topic focuses on the developments in zinc-catalysed multicomponent reactions and covers literature up to 2019.

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Facile three-component preparation of benzodiazepine derivatives catalyzed by zinc sulfide nanoparticles via grinding method

Cited by 15 publications

References 42 publications

Synthesis and characterization of N, O-donor Schiff base capped ZnS NPs as a sensor for fluorescence selective detection of Fe 3+, Cr 2+ and Cd 2+ ions

Synthesis and characterization of N, O-donor Schiff base capped ZnS NPs as a sensor for fluorescence selective detection of Fe 3+, Cr 2+ and Cd 2+ ions

Deep eutectic solvent as a highly efficient reaction media for the one-pot synthesis of benzo-fused seven-membered heterocycles

Zinc‐Catalysed Multi‐Component Reactions: An Overview

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