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.