Abstract
Unprecedented examples of 1-alkyl-1,2,4-triazolium methanesulfonate based Brønsted acidic room temperature ionic liquids were synthesized and characterized. Their catalytic activity and efficiency in recyclability and reusability on one pot synthesis of halide substituted β-amino carbonyl compounds are reported.
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Notes
The pH was measured using Digital pH meter Deepvision Model 111/101. All RTILs (5 mmol) were dissolved in triply distilled water (10 mL) for pH measurement. pH instrument was calibrated with buffer pH 2.0.
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Acknowledgments
The authors thank the Department of Science and Technology—Science and Engineering Research Board (DST-SERB, SR/FT/CS-60/2011), India for funding. Also the authors thank Dr. G. Anantharaman, Department of Chemistry, Indian Institute of Technology Kanpur for ESI-MS measurement.
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ESI mass spectra and NMR for all ionic liquids are available.
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Nagarajan, S., Kandasamy, E. Reusable 1,2,4-Triazolium Based Brønsted Acidic Room Temperature Ionic Liquids as Catalyst for Mannich Base Reaction. Catal Lett 144, 1507–1514 (2014). https://doi.org/10.1007/s10562-014-1312-7
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DOI: https://doi.org/10.1007/s10562-014-1312-7