Iminium

An iminium salt or cation in organic chemistry has the general structure + and is as such a protonated or substituted imine. It is an intermediate in many organic reactions 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.

Read more about Iminium:  Reactions Involving Iminium Salts, Iminylium Ions

Other articles related to "iminium":

Hajos–Parrish–Eder–Sauer–Wiechert Reaction - Reaction Mechanism
... by Hajos in 1974 can change to a tautomeric iminium hydroxide intermediate.The iminium hydroxide ion caused enolization of the side chain methyl ketone would be followed by ring closure ... This supports the iminium mechanism, because it is textbook chemistry that primary amines form imines rather than enamines with carbonyl compounds cf ...
Organocatalytic Transfer Hydrogenation
... this reaction the amine and the aldehyde first form an iminium ion, then proton transfer is followed by hydrolysis of the iminium bond regenerating the catalyst ... by the phosphoric acid forming a transient chiral iminium ion ...
Altretamine - Mechanism
... of CYP450-mediated metabolism also can generate electrophilic iminium species that are capable of reacting covalently with DNA guanine and cytosine residues as well as protein ... Iminium-mediated DNA cross-linking and DNA-protein interstrand cross-linking, mediated through both the iminium intermediate and formaldehyde, have been demonstrated ...
Petasis Reaction - Reaction Mechanism
... In the Mannich reaction, an imine or iminium salt serves as the electrophile to which the nucleophile adds however, in the Petasis reaction it is not clear which. 2 forms hemiaminal 4, which is in a complex equilibrium with iminium ion 3 and aminal 5 ... in a reversible fashion via intermediate 7 and 8 respectively, forming again electrophilic iminium ion 3, this time accompanied by nucleophilic boronate 3’ ...