Silica immobilized Brønsted-Lewis acidic ionic liquid: heterogeneous catalyst for condensation-aromatization in the synthesis of 2-(4-nitrophenyl)-1H-benzimidazole by cooperative catalysis

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Authors

Rahul Kalel¹

1. Padmabhushan Dr. Vasantraodada Patil Mahavidhyalaya, Tasgaon, Sangli

Conference / event

Third International Conference on Multidiscipilinary Approach In Basic and Applied Science (MABAS-2023), February 2023 (Sangli, India)

Poster summary

The silica immobilized 1-methyl-3-(4-sulphobutyl) -1H imidazolium tetrachloroaluminate has been synthesised as a heterogeneous catalyst. The catalyst has been confirmed by several characterizations such as IR, SEM-EDX, TGA and DTA. The formed catalyst effectively catalyzed the condensation aromatization reactions between orthophenylene diaminobenzene (OPD) and 4-nitrobenzaldehyde. The catalyst has been the efficient and green catalyst for the low reaction time, room temperature and non-hazardous solvents contained synthesis of benzimidazoles. Further, the turnover frequency decreases with increases in the polarity of the reaction medium recommending the participation of a different kind of mechanism. The optimum reaction condition, simplicity of catalyst preparation and characterization method and reusability reveal the efficiency of Si-BLAIL as a cooperative catalyst.

Keywords

Heterogeneous catalyst, Equivalence point, Cooperative catalysis, BLAIL, SEM

Research areas

Chemistry, Chemical Engineering

References

1. J Indian Chem Soc 2022, 99:100550

Funding

No data provided

Supplemental files

No data provided

Additional information

Competing interests

No competing interests were disclosed.

Data availability statement

Data sharing not applicable to this poster as no datasets were generated or analyzed during the current study.

Creative Commons license

Copyright © 2023 Kalel. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.