Disodium Phosphate: A Highly Efficient Catalyst for One-Pot Synthesis of Substituted 3,4-Dihydropyrano[3,2-C]Chromenes

Nana Vikram Shitole, Balasaheb V. Shitole, Gopal K. Kakde

Abstract


Disodium phosphate catalyzed one-pot synthesis of 3,4-dihydropyrano[3,2-c]chromenes,  from aldehydes, active methylene compounds malononitrile  and 4-hydroxycoumarin in ethanol:water (1:1) under reflux temperature. The attractive features of this process are inexpensive, efficient, as well as user friendly.

 

DOI: http://dx.doi.org/10.17807/orbital.v9i3.896

 


Keywords


chromenes; multi-component reaction; disodium phosphate; one-pot

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