New tetrazolic azo dyes linked to (thio)barbiturate and electron-rich aromatics as potential antimicrobial agents

A series of new tetrazolic azo dyes based on (thio)barbiturate and electron-rich aromatics were synthesized in excellent yield. The electron-donor and tetrazole ring moieties were linked by a p-phenylazo bridge and the structural characterizations were achieved by FT IR, 1 H and 13 C NMR, and UV-visible spectrometry. The antibacterial activity of the synthesized compounds was tested against gram-positive and gram-negative bacterial strains, namely Acinetobacter calcoaceticus (ATCC23055), Escherichia coli (ATCC2592), Pseudomonas aeruginosa (ATCC27853), and Staphylococcus aureus (ATCC25923). As a result, potential antimicrobial effects were seen for some of the synthesized compounds.