Synthesis, spectral behaviour and biological activity of benzoxazonyl(quinoxalonyl)‐benzfurano‐(indolo)‐quinoline apocyanine dyes

Abstract

Abstract 2[2‐(benzoxazonyl / quinoxalonyl) ‐ benzfurano (indolo)] ‐ quinolinium ‐1 ‐ ethiodide apocyanine dyes ( V a‐f and VI a‐f ) were prepared, via interaction of 2‐[2‐(benzoxazonyl‐/quinoxalonyl)‐1,2‐dibromoethenyl]‐quinolinium‐1‐ethiodide ( IV a,b ) with the appropriate phenols/and or arylamines. The new cyanines were identified by spectral determination. Bactericidal and fungicidal activity of selected cyanines ( III a,b , V a , VI a , VI h , and VII ) were tested against bacterial and fungal strains.