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Research Articles

Silica Triflate Promoted Highly Efficient and Solvent-Free One-Pot Multicomponent Protocol for Synthesis of 2-Amino-4H-Chromenes

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Pages 1676-1692 | Received 26 Sep 2021, Accepted 14 Jan 2022, Published online: 04 Feb 2022
 

Abstract

The synthesis of 2-amino-2-chromenes under solvent-free conditions is disclosed here using a silica triflate catalyzed one-pot three component condensation. The 2-amino-2-chromenes product was obtained in outstanding yield under the optimal reaction conditions of a range of functionalized aromatic aldehydes, malononitrile, and α/β-naphthol. This procedure stands out for its wide substrate scope, reduced reaction time, great yield, functional group compatibility, operational simplicity, and outstanding catalyst recyclability.

Acknowledgements

The authors would like to thank Central Instrumentation Facility, Savitribai Phule Pune University, Pune and Central Instrumentation Facility, Dada Patil College, Karjat for recording FT-IR, HRMS, 1H and 13C NMR spectrum.

Disclosure statement

No potential conflict of interest was reported by the authors.

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