The Emde degradation (also called Emde-reaction or Emde-reduction) is a method for the reduction of a quaternary ammonium cation to a tertiary amine with sodium amalgam:[1][2][3]
Emde degradation | |
---|---|
Named after | Hermann Emde |
Reaction type | Degradation reaction |
Identifiers | |
RSC ontology ID | RXNO:0000147 |
![Emde-degradation](http://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Emderxn.png/500px-Emderxn.png)
This organic reaction was first described in 1909 by the German chemist Hermann Emde and was for a long time of great importance in structure elucidation of many alkaloids, for example that of ephedrine.
Alternative reducing agents exist for this reaction; for instance, lithium aluminium hydride.
See also
- Related reactions are the Hofmann elimination and the von Braun reaction
References
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