Condensations of some ketones, such as cyclopentanone, cyclohexanone, indan‐1,3‐dione, 2‐acetyl‐1‐naphthol, 1‐acetyl‐2‐naphthol, with some active methylene compounds, such as malononitrile and cyanoacetate, in the presence of amine bases, diethylamine or triethylamine, were studied. The structures of the Knoevenagel condensation products were determined by spectral analyses.
