The Elbs Reaction
Published Online: 15 MAR 2011
Copyright © 2004 by Organic Reactions, Inc. Published by John Wiley & Sons, Inc.
How to Cite
Fieser, L. F. 2011. The Elbs Reaction. Organic Reactions. 129–154.
- Published Online: 15 MAR 2011
Diaryl ketones having a methyl or methylene substituent adjacent to the carbonyl group often suffer cyclodehydration when submitted to pyrolysis and afford a certain amount of the corresponding anthracene derivative. The reaction is usually carried out by heating the ketone without catalyst or solvent at the reflux temperature or at a temperature in the range of 400-450 degrees until the water is no longer evolved. The main hydrocarbon reaction product may not be that normally expected based on the starting material. A product of the Elbe condensation usually require extensive purification. The mechanism of the condensation is not known.
- Elbs reaction;
- side reactions;
- anthracene homologs;
- experimental conditions