Title of article :
Synthesis of 4-substituted pyrano[4,3-b]pyran-2,5-diones in an ionic liquid
Author/Authors :
Kurosh Rad-Moghadam، نويسنده , , Masoumeh Sharifi-Kiasaraie، نويسنده , , Seyyedeh Cobra Azimi، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2012
Abstract :
The mildly basic ionic liquid N,N,N,N-tetramethylguanidinium triflate (TMGTf) was found to be a very effective solvent for the reaction between 4-hydroxy-6-methyl-2H-pyran-2-one, Meldrumʹs acid, and aldehydes to afford some novel pyrano[4,3-b]pyran-2,5-diones in high yields at room temperature. The stages, through which these reactions might proceed, depend largely on the nature of the aldehyde substrates. The reaction of aliphatic aldehydes has given access to some novel carboxylated products.
Keywords :
3-b]pyran-2 , 3 , 5-dione , Meldrumיs acid , Ionic liquid , multicomponent reaction
Journal title :
Tetrahedron
Journal title :
Tetrahedron