<b>Preparation of diethyl malonate adducts from chalcone analogs containing a thienyl ring</b>

Abstract

Nine chalcone-diethyl malonate derivatives (4a-i) were prepared by the reaction of chalcone derivatives (3a-i) with diethyl malonate in the presence of a catalytic amount of KOt-Bu in CH2CI2 in good to excellent yields. The products were characterized by FTIR, 13H-NMR, 1C-NMR and elemental analyses.

Keywords

• Michael addition
• Chalcone
• KO<i>t</i>-Bu
• Diethyl malonate