Electrocatalytic multicomponent assembling of aldehydes, 4-hydroxycoumarin and malononitrile: An efficient approach to 2-amino-5-oxo-4,5-dihydropyrano(3,2-c)chromene-3-carbonitrile derivatives

2-Amino-5-oxo-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile derivatives are obtained in excellent yields by a simple, mild and efficient procedure by an electrocatalytic multicomponent chain transformation of aryl aldehydes, 4-hydroxycoumarin and malononitrile under neutral and mild conditions by electrolysis in an undivided cell in the presence of sodium bromide as an electrolyte. Crown Copyright (C) 2013 Published by Elsevier Masson SAS on behalf of Academie des sciences. All rights reserved.