A simple and satisfactory environment friendly procedure for synthesis of some antimicrobial azo-Schiff bases is presented. The
condensation of o-hydroxy azoaldehydes and diaminomaleonitrile in the presence of a catalytic amount of acetic acid produced desired
Schiff bases in high yields.
Key words: Schiff base, azo dye, diaminomaleonitrile, salicylaldehyde, antimicrobial, o-hydroxy azoaldehydes
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