Pyridinium refers to the cation [C 5 H 5 NH] +. It is the conjugate acid of pyridine. Many related cations are known involving substituted pyridines, e.g. picolines, lutidines, collidines. They are prepared by treating pyridine with acids. [3]

Pyridinium | C5H6N+ | CID 4989215 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

Structurally diverse pyridinium salts are quite familiar structures in many natural products and bioactive pharmaceuticals. Over the centuries, these privileged scaffolds have played an intriguing role in a wide range of research topics and, thus, this review aims at highlighting the pyridinium salts in term 2018 Organic Chemistry Frontiers ...

Pick your pyridinium: N-Functionalized pyridinium salts have emerged as versatile reagents for the redox-triggered liberation of a wide variety of radical species for diverse synthetic applications. This Review highlights recent advances and discusses mechanistic aspects of the key fragmentation process.

2019年8月28日 · This Review describes recent advances in the area of pyridinium salts as radical precursors, concerning the development of radical reactions involving pyridinium salts in organic synthesis.

Initially, they were only considered as effective germicides. Several researches have been done for the modification of the properties of these salts, making them important for various applications. This paper reviews the types, synthesis, properties, and applications of quaternary pyridinium salts.

Lewis acids easily add to the nitrogen atom of pyridine, forming pyridinium salts. The reaction with alkyl halides leads to alkylation of the nitrogen atom. This creates a positive charge in the ring that increases the reactivity of pyridine to both oxidation and reduction.