This research includes the preparation of some of pyrazoline derivatives containing the azo group by one pot method through the treatment of the compound 2-hydroxy-5-(m-tolyldiazenyl) benzaldehyde with p-chlorob enzylchloride to give the compound(1) using the Williamson reaction. The compound (1) is treated with a series of ketones and with phenylhydrazine in the base medium to give new derivatives of pyrazoline (2-11). The synthesized compounds were characterized by elemental analyses and FT-IR, 1 H-NMR, 13 C-NMR, 13 C-DEPT.

Three novel palladium­(II) mixed-ligand complexes of N-(benzothiazol-2-yl)­benzamide (HL) and 1,2-bis­(diphenylphosphino)­ethane (dppe), [Pd­(HL)­(dppe)]­Cl2 (1), [Pd­(L)­(dppe)]­Cl (2), and [Pd­(L)2(dppe)] (3), were synthesized and fully characterized using Fourier transform infrared, 1H, 13C, and 31P NMR, and molar conductivity measurements. Complex 3 was characterized by single-crystal X-ray diffraction. The ligand HL showed three different coordination modes: a neutral bidentate chelate bound through the endocyclic nitrogen and exocyclic oxygen atoms in 1, a negatively charged L bound as a bidentate chelate through the endocyclic nitrogen and negatively charged exocyclic oxygen atoms in 2, and a monodentate bound through the negatively charged endocyclic nitrogen atom in 3.

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This research includes the preparation of some of pyrazoline derivatives containing the azo group by one pot method through the treatment of the compound 2-hydroxy-5-(m-tolyldiazenyl) benzaldehyde with p-chlorob enzylchloride to give the compound(1) using the Williamson reaction.  The compound (1) is treated with a series of ketones and with phenylhydrazine in the base medium to give new derivatives of pyrazoline (2-11). The synthesized compounds were characterized by elemental analyses and FT-IR, 1H-NMR, 13C-NMR, 13C-DEPT.

A number of 3-(substituted)-5-(2((4-chlorobenzyl)oxy)-5-(m-tolyldizenyl) pheny l) pyrazoline (3a-j) have been synthesized by benzyloxation of hydroxyl group to give the substrate 2-((4-chlorobenzyl)oxy)-5-(m-tolyldizenyl) benzaldehyde (1). The compound (1) has been treated with different substituted acetophenone to give a new series of chalcone derivatives 1-(substituted)-3-(2-((4-chlorobenzyl)oxy)-5-(m-tolyldiazenyl) phenyl) prop-2-en-1-one (2a-j). The chalcone derivatives have been treated with hydrazine hydrate according to Michael addition reaction to afford a series of new pyrazoline derivatives. The characterization of the newly synthesized compounds elucidated by FT-IR, 1H-NMR, 13C-NMR, 13C-DEPT and elemental analyses