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Novel compounds with antibacterial properties: pyrazoline derivatives were synthesized by the cyclization of various -1-[2-(alkoxy)phenyl]-3-(furan-2-yl) prop-2-en-1-one 1a–1d with N-substituted phenyl hydrazine in the presence of CH3COOH in ethanol. The structures of these compounds were elucidated by, IR, 1H NMR, 13C NMR, ESI-MS spectral data and their purities were confirmed by elemental analyses...