Ueber eine Darstellungsweise der Glutarsäure

Potassium Fluoride/ K10-montmorillonite Nanostructure as a Green and Reusable Catalyst Under mild Reaction Conditions for the Knovenagel Condensation

“…Knoevenagel condensation is one of the well well documented reactions for forming electrophilic olefins and C-C bond between carbonyl compounds and active methylene compounds. This reaction is a practical method to achieve fine chemical intermediates and therapeutic and pharmacological products [1][2][3] . Owing to their impor tance from an industrial, pharmacological and synthetic point of view a great number of methods for the Knoevenagel condensation have been developed using various Lewis acids/bases under ultrasound and microwave irridiation, using green solvent like water or ionic liquid, and grindstone method under solvent-free condition [4][5][6][7][8][9][10][11][12] .…”

Silica Supported Ammonium Acetate: An Efficient and Recyclable Heterogeneous Catalyst for Knoevenagel Condensation between Adehydes or Ketones and Active Methylene Group in Liquid Phase

“…All the melting points were determined on Perfit melting point apparatus and are uncorrected. 1 H NMR spectral data was registered on Bruker DPX-200 NMR spectrometer (200 MHz) in CDCl 3 using tetramethylsilane as an internal standard. The IR spectra were recorded using KBr disc on Perkin-Elmer FTIR spectrophotometer.…”

Synthesis of a Series of 2-Indolylmethylene-Linked Compounds by Thermal Knoevenagel Condensation Under Catalyst- And Solvent-Free Conditions

“…This has made the synthesis of compounds containing indole moiety an interesting target for synthetic organic chemists. The Knoevenagel condensation 4 of substituted aromatic aldehydes with active methylene compounds is an important and widely employed method for carbon-carbon bond formation in organic synthesis with numerous applications in the construction of different types of organic molecules of biological significance. The reactions are usually catalyzed by bases 5 such as aliphatic amines, ethylenediamine and piperidine or their corresponding ammonium salts, ammonia or sodium ethoxide in organic solvents.…”