# Primary Pyrrolimines and Pyridinimines

## TL;DR

This paper explores the synthesis and properties of new imine compounds linked to pyrrole or pyridine rings.

## Contribution

The study introduces and isolates new pyrrolimines and pyridinimines with N-unsubstituted imine groups.

## Key findings

- Pyrrole and pyridine derivatives with N-unsubstituted imine groups were successfully synthesized.
- These compounds are less volatile and more challenging to isolate compared to similar aromatic derivatives.
- The work opens new avenues for understanding the physicochemical properties of these understudied compounds.

## Abstract

The association of an aromatic ring with an N-H-unsubstituted imine generates families of compounds that have been little studied until now except when the ring is a phenyl group. Recently, such imines substituted by a furan or thiophene group have been synthesized. This work reports a similar study where a pyrrole or pyridine ring is directly linked to an N-unsubstituted aldimine or ketimine group in order to isolate such compounds and to open the way to the knowledge of their physicochemical properties. The lower volatility of pyrrole and pyridine derivatives compared to aryl, furan, or thiophene derivatives greatly increases the difficulty of the synthesis and isolation of these kinetically unstable compounds.