2026, Vol. 7, Issue 1, Part A

This present work exhibits synthesis of Dibutyl Benzimidazolium tetrafluoroborate [DBBim]BF₄^- Based Task Specific Ionic Liquid (TSIL). [DBBim]BF₄^- used as a catalyst for quickly synthesis of Bis-thiazolidinone derivatives via reaction of Aromatic aldehydes, para-phenylene diamine, and Thioglycolic acid. Dibutyl Benzimidazolium tetraflouroborate task specific ionic liquid has demonstrated noticeably higher activity compared to those containing other anion and other catalyst in the literature in less time. This TSIL serves as a catalyst and solvent during the synthesis of Bis-thiazolidinone derivatives, providing a moderate to good yield. Bis-Thiazolidinone derivative synthesis takes 20 minutes when TSIL utilized for the reaction. The ionic liquid was easily extracted from the reaction medium and reused for the subsequent run without any loss of its catalytic activity. The Characterization of these synthesized compounds was done by spectral analysis Like IR, ¹H-NMR, ¹³C-NMR. Mass Spectra.