Articles written in Journal of Chemical Sciences
Volume 129 Issue 8 August 2017 pp 1211-1217 RAPID COMMUNICATION
In this work, a green and efficient methodology has been developed for the synthesis of 1,2,3-triazoles by ‘copper nanoparticles supported on nanocellulose (CuNPs/NC)-catalyzed azide-alkyne cycloaddition reaction in glycerol, an environmentally benign solvent, with excellent yields. The present catalyst wascharacterized by TEM, XRD, SEM-EDX and FT-IR spectroscopy. The reusability of the prepared nanocatalyst was examined up to five times without significant loss of catalytic activity.
Volume 130 Issue 5 May 2018 Article ID 0053
Development of greener methodologies in synthetic organic chemistry has brought awareness in recent decades due to the ecological performance of green solvent media and catalytic systems. Here, we carried out the peptide bond formation reaction in one of the environmentally secure solvents, ‘ionic liquids’ in the presence of coupling reagent and in the absence of external base at room temperature, affording dipeptides in good to excellent yields
Volume 131 Issue 8 August 2019 Article ID 0080
The feasible and one of the green ways to synthesize organic compounds especially pyrazole and its derivatives are systematically presented. The one-pot synthesis of pyrazole was achieved by condensation of various hydrazines and 1,3-diketone derivatives at room temperature using transition metal-based ionicliquids. Herein, the unique combination of Fe(III) with ionic liquid is explored and utilized as an efficient homogeneous catalyst for the synthesis of pyrazole and its derivatives. The homogenous catalyst thus synthesised was re-used up to the fourth cycle (with 90%, 88%, 84%, 78% yields respectively).
Volume 133 All articles Published: 26 November 2021 Article ID 0131
In this work, we have described a very simple and low metal loading copper-based ionic liquid assolvent and catalyst for regioselective synthesis of 1,4-disubstituted-1,2,3-triazoles. The proposed protocolproved its efficiency by showing excellent tolerance to a large array of electronically diverse substrateswithout the use of the external base, solvent and ligands. Moreover, from cytotoxicity analysis the catalystwas found to be non-toxic in nature due to extremely low loading of copper metal (0.1 mol %).
This work describes a very simple and low metal loading catalytic system for efficient synthesis of 1,4-disubstituted-1,2,3-triazoles. The synthesized copper based ionic liquid acted both as solvent and as catalyst. Cytotoxicity analysis indicates that the catalyst is non-toxic in nature due to extremely low loading of copper metal (0.1 mol%).
Volume 134, 2022
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