SYNTHESIS AND CHARACTERIZATION OF POLYSALICYLALDEHYDE BY OXIDATIVE POLYCONDENSATION OF SCHIFF BASE COMPOUND 2,4- DICHLOROPHENYLIMINO METHYL AS NEW PRECURSOR

In this paper, polysalisylaldehyde (PSA) has been synthesized from the oxidative polycondensation (OP) of 2-[(2,4-dichlorophenylimino)methyl]-phenol (sal-2,4-Clan) with NaOCl in an aqueousalkaline medium between 50 and 90°C and characterized by 1H-NMR, FT-IR and UV-Vis techniques. The conversion of PSA was 61.23% in optimum conditions such as [sal-2,4-Clan]0 = 0.02, [KOH]0= 0.1 [NaOCl]0 = 0.12 mol/L at 90°C for 10h. Additionally, the crystal structure of sal-2,4- Clan has been determined by single-crystal Xray crystallography.

Keywords:

PSA: Polysalisylaldehyde , OP: oxidative polycondensation , sal-2 , 4-Clan: 2-[(2 , 4-dichlorophenylimino)-methyl]phenol