Author : Mahesh Bhat and Belagali S. L.

We synthesized the five compounds of azo bridged ethoxybenzothiazole substituted phenyl ester derivatives by using Dicyclo Hexyl Carbodiimide (DCC) and a catalytic amount of Dimethyl amino pyridine (DMAP) as a nucleophile. All the compounds structures were confirmed by IR, NMR and mass spectrum. The synthesized compounds were screened for antioxidant property by DPPH radical scavenging method. (E)-4-[(6-ethoxy benzothiazol-2-yl) diazenyl] phenyl 2-methyl benzoate (B1) and (E)-4-[(6-ethoxy benzothiazol-2-yl) diazeny]) phenyl 4-fluoro benzoate (B5) showed comparable activities.

Keywords: Benzothiazole, Esterification, DCC, DMAP, antioxidant, DPPH.

Article published in International Journal of Current  Engineering  and Technology, Vol.4,No.4 (Aug- 2014)