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

Abstract

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, 1H‐NMR and FT‐IR techniques.

Synthesis of New Substituted 1,2,4‐Triazines from Isonitrosoketones and Terephthalaldehydedihydrazone

“…For this reason, a new synthetic procedure to 1,2,4‐triazine derivatives is reported using different starting materials. In our previous study, five‐membered heterocyclic compounds were prepared by the heteroaromatic closing reaction .…”

Efficient 2,4,6‐trichloro‐1,3,5‐triazine‐catalyzed synthesis of 2‐arylbenzothiazoles and bisbenzothiazoles by condensation of 2‐aminithiophenol with aldehydes under mild conditions

“…The reaction proceeded smoothly for 3 h at room temperature using the present protocol, and the desired product 2m was obtained in 94% isolated yield, mp 258–260°C (lit. 258°C) [23].…”