This study comprises the synthesis and characterization of twenty thiazole-derived carbamates (3a-e), N-substituted amides (8a-h) and carboxamide (10) from 2-aminothiazoles (1a, b) via nucleophilic substitution reactions with activated carbonyl compounds including, chloroformates (2a-d), acid chlorides (7a-e) and glutaric anhydride (9), respectively. Sequential hydrazinolysis of carbamate (3e) and condensation with a variety of aldehydes and ketones (5a-d) afforded the corresponding semicarbazones (6a-d).
Polystyrene/clay nanocomposite (PCN) was successfully prepared. Five characterization methods were applied: Particle size distribution analysis (PSD), Fourier Transfer Infrared spectra (FTIR), X-ray diffraction (XRD), Transmission Electronic Microscopy (TEM) and Differential Scanning Calorimetry (DSC). PCN was prepared by modification of Raw Kholais clay first with NaCl then with Cetylpyridinium chloride (CPC) surfactant to obtain the organoclay (OC). After ion exchange with CPC, FTIR confirmed the existence of these intercalated agents in the organic clay samples.
