Elassar, A.-Z. A.-A. (2015). An unexpected tandem cycloaddition reaction of α,β-unsaturated acid chloride with amines: Synthesis of dihydropyrancarboxamide derivatives and biological activity. European Journal of Chemistry, 6(4), 387–393. https://doi.org/10.5155/eurjchem.6.4.387-393.1306