ABSTRACT
An efficient method was developed for the synthesis of dihydrofuran substituted coumarin from a one-pot, four-component reaction of 2-hydroxy aromatic aldehydes, 6-methyl, 4-hydroxy pyranone, aromatic aldehyde, and pyridinium ylide in the presence of tri-ethylamine under microwave irradiation. The reaction proceeds under solvent-free conditions to afford C3-dihydrofuran substituted coumarin in a diastereoselective manner in good yields (71–89%).
GRAPHICAL ABSTRACT
![](/cms/asset/71779cca-9d11-4b34-8949-b8ecf55797e8/lsyc_a_1159696_uf0001_oc.jpg)
Acknowledgment
We thank Sri Venkateswara University for recording NMR and MS spectra.