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In this study, we present a new approach to synthesizing a magnetically separable Pd‐Fe3O4@GO catalyst using a simple single‐pot method. The catalyst was employed in Sonogashira coupling reactions, demonstrating excellent results. The catalyst was studied using a various characterization method, including X‐ray photoelectron spectroscopy (XPS), scanning electron microscope–energy‐dispersive X‐ray spectroscopy (SEM‐EDS) mapping, TEM, X‐ray diffraction (XRD), FTIR, and inductively coupled plasma mass spectrometry (ICP‐MS). Pd‐Fe3O4@GO exhibited superior catalytic activity compared with its conventional counterparts in phenylacetylene‐iodobenzene coupling reactions under copper co‐catalyzed‐free and ligand‐free conditions, with a higher turnover frequency (TOF) of 118.3 h−1. Optimized conditions yielded high yields for various substrates, including inactive aryl chloride and bromide substrates, emphasizing its versatility. Also, a reaction mechanism was proposed and a kinetic model was developed. The catalyst's green chemistry potential was highlighted because of its high efficiency, purity of products, recoverability, and ease of preparation. Moreover, Pd‐Fe3O4@GO demonstrated impressive stability through multiple recycling rounds without loss of functionality, making it a promising tool for sustainable chemical processes. [ABSTRACT FROM AUTHOR]

Several per-O-acetyl and per-O-benzoyl glycosylthiocarbamides were synthesized by the interaction of glycosylisothiocyanates and o-phenylenediamine. While these thiocarbamideson further reactions with anisaldehyde give respective benzylidene derivatives. The identities of these newly synthesized compounds were established on the basis of usual chemical transformations, IR, ¹H NMR, 13C NMR and Mass spectral studies. All the synthesized compounds have been evaluated for their antibacterial and antifungal activity against different bacteria and fungi by the agar diffusion method. [ABSTRACT FROM AUTHOR]

Several per-O-acetyl and per-O-benzoyl glycosyl thiocarbamides were synthesized by the interaction of glycosyl isothiocyanates and o-phenylene diamine. The identities of these newly synthesized compounds were established on the basis of usual chemical transformations, IR, ¹H NMR, 13C NMR and Mass spectral studies. All the synthesized compounds have been evaluated for their antibacterial and antifungal activity against different bacteria and fungi by agar diffusion method. [ABSTRACT FROM AUTHOR]

ABSTRACT In this study, an efficient catalytic protocol using CuCoFe2O4@GO (CCF@GO) for the synthesis of amide bond (−CONH−) via direct coupling of carboxylic acids and N,N‐dialkylformamides is presented. The CCF@GO nanocatalyst has been synthesized via a single‐pot solvothermal method, by changing the proportions of copper and cobalt (1:1, 1:3, and 3:1). Catalyst screening, employing a model reaction with benzoic acid and dimethylformamide (DMF), revealed that the 1:1 proportion of CCF@GO catalyst exhibited excellent efficiency, achieving a high conversion (98%) towards amide formation. The enhanced catalytic efficiency observed in CCF@GO catalysts can be ascribed to the uniform distribution of active copper and cobalt species on the graphene oxide support, which possesses a high surface area. Optimization of the reaction was conducted by varying parameters such as temperature, solvent, catalyst loading, and oxidant. The prepared catalyst was characterized using various analytical techniques including XRD, FTIR, XPS, SEM, EDX mapping, and TEM. Furthermore, this heterogeneous nanocatalyst demonstrated recoverability using an external magnet and reused up to five times with just a modest loss of catalytic performance. [ABSTRACT FROM AUTHOR]