View source for Iminium

[[Image:Iminium-2D.png|thumb|right|150px|The general structure of an iminium cation]]
An '''iminium''' [[salt]] or [[cation]] in [[organic chemistry]] has the general structure [R<sup>1</sup>R<sup>2</sup>C=N<sup></sup>R<sup>3</sup>R<sup>4</sup>]<sup>+</sup> and is as such a [[protonation|protonated]] or [[Substitution reaction|substituted]] [[imine]] <ref>[http://www.iupac.org/goldbook/I02958.pdf IUPAC goldbook definition]</ref>. It is an intermediate in many [[organic reaction]]s such as the [[Beckmann rearrangement]], [[Vilsmeier-Haack reaction]], [[Stephen reaction]] or the [[Duff reaction]]. The use of the alternative names '''imonium''' compounds and '''immonium''' compounds is discouraged.

==Reactions involving iminium salts==
*[[Beckmann rearrangement]]
*[[Eschenmoser's salt]]
*[[Duff reaction]]
*[[Stephen reaction]]
*[[Vilsmeier-Haack reaction]]

==Iminylium ions==
'''Iminylium ions''' have the general structure R<sub>2</sub>C=N<sup>+</sup>. [[Nitrenium ion]]s form a subclass <ref>[http://goldbook.iupac.org/I02964.html IUPAC goldbook definition]</ref>. 

== External links ==
{{reflist|2}}



[[category:functional groups]]

[[es:Iminio]]
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