Noramimines

Noramimines are a class of organic compounds that are structurally related to imines but differ in the position of a double bond. Specifically, noramimines are characterized by a carbon-nitrogen double bond where one of the carbon atoms is directly attached to a nitrogen atom that is *not* part of the double bond. This arrangement is sometimes referred to as a $\beta$-enaminone or related structures. They can be thought of as vinylogous amides.

These compounds are often found as intermediates in organic synthesis and can exhibit interesting reactivity. The delocalized electron system in noramimines contributes to their chemical properties, making them susceptible to various electrophilic and nucleophilic attacks. They can be synthesized through several methods, including the condensation of $\beta$-dicarbonyl compounds with amines or through rearrangements of other nitrogen-containing functional groups. The presence of the enamine-like structure also lends itself to tautomerism, where a proton can shift between the nitrogen and an adjacent carbon atom. This tautomerism can influence the regioselectivity and stereoselectivity of reactions involving noramimines. Their utility in synthesizing more complex molecules, including heterocycles, makes them valuable tools in medicinal chemistry and materials science.