The use of carbon dioxide to functionalize saccharides as natural products especially for obtaining organocatalysts or cryptands

The use of carbon dioxide to obtain urea derivatives of saccharides as organocatalysts or cryptands is part of the assumptions of modern organic synthesis. Sugars as compounds of natural origin with high optical purity are easily available and at the same time cheap as substrates. Their hydrophilicity allows the reactions to be carried out in the water. The combination of the advantages of saccharides with the elimination of carbon dioxide from the environment is the main topic of this publication.