Substituted pyrazolyl derivatives were synthesized through Suzuki cross coupling of aromatic boronic acid with heterocyclic halide using newly nano-Pd/chitosan catalyst by the water-mediated green synthesis methodology. The reactivity nano-Pd was highly enhanced incorporating palladium nanoparticles a biopolymer chitosan matrix. studied thoroughly for its structure, morphology, and other fundam...

New carboxymethyl chitosan-activated carbon derivatives were synthesized and characterized using FTIR, XRD SEM spectra. The prepared adsorbents containing different ratios of activated ranged between 5% 20% relative to the chitosan. evaluated as for removal copper lead ions from industrial wastewater. efficiency was increased by increasing percentage in adsorbent. adsorption process two metals ...

Carbohydrates and derivatives (such as glycolipids, glycoproteins) are of critical importance for cell structure, metabolism and functions. The effects of carbohydrate and lipid metabolic imbalances most often cause health disorders and diseases. In this study, new carbohydrate-based nanobioconjugates were designed and synthesized at room temperature using a single-step aqueous route combining ...

Pyridazine and thiazole derivatives have various biological activities such as antimicrobial, analgesic, anticancer, anticonvulsant, antitubercular other anticipated properties. Chitosan can be used heterogeneous phase transfer basic biocatalyst in heterocyclic syntheses. Novel 1-thiazolyl-pyridazinedione were prepared via multicomponent synthesis under microwave irradiation ecofriendly energy ...

Chitosan films were subjected to accelerated artificial weathering at ?>300 nm and 60 °C in the presence of O2. The resulting variations chemical structure characterized by IR spectroscopy UV–vis spectroscopy, a photooxidation mechanism was proposed based on identified oxidation photoproducts. formation gluconolactone derivatives leading chain scissions shown. In addition, low molecular weight ...