Aldol condensations of aromatic aldehydes with ketones under solvent-free conditions to synthesize α,β-unsaturated ketones in good to excellent yields using PEG400 and powd. anhydrous K2CO3 as catalysts at 90°C and 120°C are described.
2004-01-01·SYNTHETIC COMMUNICATIONS
A Practical Knoevenagel Condensation Catalyzed by PEG400 and Anhydrous K2CO3 Without Solvent
Knoevenagel condensation of aromatic aldehydes with active methylene compounds under solvent-free conditions to synthesize arylidene compounds in good to excellent yields using powd. anhydrous K2CO3 and PEG400 as catalysts was described.