Synthesis and characterization of new pyrazole-based thiazoles

A series of new 5-(heteroaryldiazenyl)thiazole incorporating pyrazole moiety have been synthesized through coupling of the thiazole with the appropriate heteroaryldiazonium salts. The newly synthesized compounds were characterized by elemental analysis, spectroscopic (IR, ¹H NMR, and Mass) data, and alternative synthesis whenever possible.