Abstract
An efficient green synthesis of eight 3-amino-12-oxo-1-aryl-1,12-dihydrobenzo[h]pyrano[3,2-c]chromene-2-carbonitriles may be achieved by a three-component, one-pot reaction between 4-hydroxy-2H-benzo[h]chromen-2-one, malononitrile and various araldehydes in water in the presence of NEt3.
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