Synthesis of Certain New Thiazole and 1,3,4-Thiadiazole Derivatives via the Utility of 3-Acetylindole

2-(2-(1-(1H-Indol-3-yl)ethylidene)-hydrazinyl)-4-substituted 5-(aryldiazenyl)thiazoles and 5-((1-(1H-indol-3-yl)ethylidene)hydrazono)-2-substituted-4-phenyl-4,5-dihydro-1,3,4-thiadiazoles were synthesized via reaction of hydrazonoyl halides and 2-(1-(1H-indol-3-yl)ethylidene)hydrazine-1-carbothioamide and alkyl 2-(1-(1H-indol-3-yl)ethylidene)hydrazine-1-carbodithioate in ethanolic triethylamine. Structures of the newly synthesis were elucidated on the basis of elemental analysis, spectral data, and alternative synthetic route whenever possible.