Potash Alum as a Sustainable Heterogeneous Catalyst: A One-Pot Efficient Synthesis of Highly Functionalized Pyrrol-2-ones and Furan-2-ones

Abstract

An environment-friendly efficient one-pot, multicomponent condensation of different aldehydes and amines with dialkyl acetylenedicarboxylates, for the synthesis of polysubstituted pyrrol-2-ones and furan-2-ones is disclosed. Key features of this methodology is the use of Potash Alum (K [Al(SO₄)₂].12H₂O) as an eco-friendly, economical and reusable solid catalyst. Use of inexpensive reagents, mild reaction conditions, operational simplicity, short reaction times, no need for chromatographic purification and high yields are the other key features of the disclosed strategy.

Graphical Abstract

Keywords:

• Furan-2-one
• potash alum
• pyrrol-2-one
• sustainable chemistry
• green synthesis

Acknowledgments

The authors are thankful to SAIF, PU, Chandigarh and SAIF, CDRI, Lucknow for the spectral data. F. T. and S. P. V. thankCSIR, New Delhi for the award of SRF and JRF respectively. A.M. thanks UGC, New Delhi for the award of SRF. Prof. Jagdamba Singh acknowledges the financial support from UGC, New Delhi in the form of BSR Faculty Fellowship (Fellowship No. 201819-BSRFACULTY-10074-3)

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

Council of Scientific and Industrial Research, India; University Grants Commission.