Nafion-H® catalyzed efficient condensation of indoles with aromatic aldehydes in PEG-water solvent system: A green approach

An efficient green procedure for the synthesis of bis (indolyl) methanes in water

In this work, a green, simple and highly efficient procedure for the synthesis of bis(indolyl)methanes is described. The condensation of indoles with carbonyl compounds catalyzed by citric acid in water affords bis(indolyl)methanes in high yields and relatively short reaction times. The advantages of this method are using of water as a low cost solvent and efficient recyclability of the catalyst.

Microwave Enhanced Knoevenagel Condensation of Barbituric Acid with Aromatic Aldehydes on Basic Alumina

Efficient Knoevenagel condensation of barbituric acid with different aromatic aldehydes on basic alumina was performed in a conventional microwave over in the absence of solvent.

Kinetic Studies of Condensation of Aromatic Aldehydes with Meldrum’s Acid

The condensation reaction of Meldrum’s acid with aromatic aldehydes in the presence of a catalyst has been investigated spectrophotometrically at 25Ð50 ∞C. The reaction follows overall second order kinetics, first order in each of the reactants. Electron-withdrawing groups accelerate and electron-releasing groups retard the rate of condensation. From the dependence of the rate constants on temp...

The Condensation of Aromatic Aldehydes with Glycine and Acetylglycine

The Condensation of Aromatic Aldehydes with Glycine and Acetylglycine