pyridiniumtype
Pyridinium-type compounds refer to salts or ionic species that contain the pyridinium cation, which is formed when pyridine is converted to a positively charged N-substituted ring. The core cation arises from quaternization of the pyridine nitrogen, typically by alkylation with an alkyl halide or by protonation. The resulting salts carry a counterion such as chloride, bromide, tetrafluoroborate, hexafluorophosphate, or p-toluenesulfonate.
Preparation methods center on modifying pyridine. N-alkylpyridinium salts are commonly made by reacting pyridine with an
Properties of pyridinium-type compounds vary with the counterion and substituents. They are typically polar and can
Applications are broad in organic chemistry and materials science. They serve as reagents and catalysts, facilitate