Green synthesis of CuO nanoparticles using aqueous extract of Thymus vulgaris L. leaves and their catalytic performance for N-arylation of indoles and amines

[Display omitted] •Green synthesis of CuO NPs using Thymus vulgaris L. leaf extract.•Ligand-free N-arylation of indoles and amines.•Characterization of CuO NPs by XRD, EDS, TEM, TGA/DTA, FT-IR and UV–vis.•The catalyst can be recovered and reused for further catalytic reactions with almost no loss in...

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