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New candidates of imidazo[1,2‐a]pyridine were designed by combining 2‐amino pyridine, TOSMIC and various assorted aldehydes to explore their antioxidant and antifungal potential. The design of these derivatives was based on utilizing the antifungal potential of azoles and TOSMIC moiety. These derivatives were synthesized by adopting multi‐component reaction methodology, as it serves as a rapid and efficient tool to target structurally diverse heterocyclic compounds in quantitative yield. The resulting imidazo[1,2‐a]pyridine derivatives were structurally verified by 1HNMR, 13CNMR, HRMS, and HPLC. The compounds were analyzed for their antioxidant and fluorescent properties and it was observed that compound 15 depicted highest potential. The compounds were evaluated for their antifungal potential to highlight their medical application in the area of Invasive Fungal Infections (IFI). Compound 12 gave the highest antifungal inhibition against Aspergillus fumigatus 3007 and Candida albicans 3018. To elucidate the antifungal mechanism, confocal images of treated fungi were analyzed, which depicted porous nature of fungal membrane. Estimation of fungal membrane sterols by UPLC indicated decrease in ergosterol component of fungal membrane. In silico studies further corroborated with the in vitro results as docking studies depicted interaction of synthesized heterocyclic compounds with amino acids present in the active site of target enzyme (lanosterol 14 alpha demethylase). Absorption, distribution, metabolism, and excretion (ADME) analysis was indicative of drug‐likeliness of the synthesized compounds. [ABSTRACT FROM AUTHOR]

A one-pot two-step oxidative process has been developed for the tert -butyl hydroperoxide mediated transformation of aldehydes and amines into amides catalyzed by copper(I) iodide and an N-heterocyclic carbene. The process is additive-free and does not require the amine to be transformed into its hydrochloride salts. The method is simple and practicable, has a broad substrate scope, and uses economical, feasible, and abundant reagents. [ABSTRACT FROM AUTHOR]

Polypyrrole nanofibers/ meso-tetra(4-sulfonatophenyl)porphyrin/graphene quantum dots nanohybrid (PTG) was synthesized by a facile chemical oxidative reaction using persulfate salt of cetyltrimethylammonium cation ((CTA)SO) as the oxidative template. The facile formation and interactions among different constituents were established by FT-IR, UV-Vis, XRD and XPS studies. Morphological analysis was carried out by SEM and HRTEM showing polypyrrole nanofibers (PNF) to be formed with diameters in the range of 29-57 nm and HRTEM micrographs depicted the intercalation of meso-tetra(4-sulfonatophenyl)porphyrin (TSPP) and graphene quantum dots (GQDs) with PNF. The electrical conductivity of PNF and PTG was evaluated using four-probe conductivity measurement. Electrochemical activity of PNF and PTG deposited on indium tin oxide (ITO) electrode was demonstrated using cyclic voltammetry with Fe(CN) as the redox species. PTG electrode displayed an enhanced voltammetric response vis-à-vis PNF due to the synergistic effect of PNF, TSPP and GQDs resulting in an increased electroactive area beneficial for a sensing probe. Further, the PTG electrode was checked for its capability to simultaneously detect Cd and Pb in aqueous solution by differential pulse voltammetry (DPV). [ABSTRACT FROM AUTHOR]