New Hydrazides and Hydrazide-Hydrazones of 2,3-Dihalogen Substituted Propionic Acids: Synthesis and in vitro Antimicrobial Activity Evaluation.

The main aim of this research was the synthesis, spectral identification and in vitro antimicrobial evaluation of new hydrazides and hydrazide-hydrazones of 2,3-dihalogen substituted propionic acids. New hydrazides were obtained by the substitution reaction of appropriate ethyl esters of 2,3-dihalogen substituted propionic acids with hydrazine hydrate. Then obtained hydrazides were subjected to condensation reaction with various aldehydes which yielded with new hydrazide-hydrazone derivatives. All obtained compounds were identified on the basis of spectral methods ( H-NMR, C-NMR) and in vitro screened against a panel of bacterial and fungal strains according to EUCAST and CLSI guidelines.