WORLD JOURNAL OF ADVANCE
HEALTHCARE RESEARCH

Malak Alhori*, Abdulilah Alsheikh Hammoud

ABSTRACT

In this study, a novel resorcinol derivative was synthesized via a catalyst-free three-component Mannich reaction between resorcinol and 2,4-dinitrophenylhydrazine. The reaction proceeded successfully, and the product was isolated as a yellow precipitate. The synthesized compound was fully characterized using Fourier transform infra-red spectroscopy (FT-IR), as well as ¹H NMR and ¹³C NMR spectroscopy. The FT-IR spectrum confirmed the formation of a new methylene bridge, evidenced by characteristic absorption bands at 2859–2922 cm?¹, indicat-ing the success of the Mannich reaction. The ¹H NMR and ¹³C NMR spectra further corroborated the proposed structure, displaying distinctive signals for the methylene bridge at 3.45 ppm and 43 ppm, respectively. The dye-ing performance of the synthesized compound was evaluated on wool and cotton fibers, demonstrating good affinity and coloration efficiency, particularly for wool fibers. Furthermore, the compound was assessed as a corrosion inhibitor for carbon steel in 3.5 wt.% NaCl solution using electrochemical polarization techniques. The results revealed excellent inhibition performance, achieving a maximum efficiency of 99.3% at an optimal concentration of 150 ppm.

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