Elsevier, Tetrahedron Letters, 44(56), p. 6145-6148
DOI: 10.1016/j.tetlet.2015.09.111
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A simple and highly efficient new approach for the synthesis of 4-aryl-2-oxo-2H-chromene-3-carbonitriles based on the oxidation and hydrolysis of 2-amino-4-aryl-4H-chromene-3-carbonitriles is described.