Synthesis of 2,2′‐( p ‐phenylene)bisbenzazoles compounds from terephthalohydroxamoyl chloride

In this study, synthesis of symmetric compounds of 2,2′‐( p ‐phenylene)bisbenzothiazole, 2,2′‐( p ‐phenyl‐ene)bisbenzimidazole and 5,5′‐dimethyl‐2,2′‐( p ‐phenylene)bisbenzoxazole were benefited from the reaction of terephthalohydroxamoyl chloride with 2‐amino‐4‐methyl phenol, o ‐aminothio phenol and o ‐phenylenedi‐amin compounds. The structures of these compounds were confirmed by elemental analysis, mass, 1 H‐NMR and FT‐IR techniques.