Photochemical transformations of pyridinium salts: mechanistic studies and applications in synthesis.

Photochemical Studies on Degradation of Cetyl Pyridinium Chloride (Cationic Surfactant) in Aqueous Phase Using Different Photocatalysts

The photocatalytic process using semiconductors with a nanostructure is one of the technologies usedfor the destructive oxidation of organic compounds such as surfactants. In this paper, thephotocatalytic degradation of Cetyl pyridinium chloride (CPC), was investigated in aqueous phaseusing various semiconductors such as titanium dioxide (Ti02), zinc oxide (ZnO), stannic oxide(Sn02). The degrad...

A Demonstration of the Synthetic Potential of Pyridinium Salt Photochemistry by Its Application to a Stereocontrolled Synthesis of (+)-Mannostatin A(1).

Earlier,2 we demonstrated how an old,3 yet understudied,4 pyridinium salt photochemical reaction can be used in versatile, stereocontrolled routes to highly functionalized aminocyclopentenes 1 (Scheme 1). Remarkably high levels of functional and stereochemical complexity are introduced in these reactions of pyridinium salts which proceed by sequential photoelectrocyclization, nucleophilic addit...

Synthesis and characterizations of pyridinium salts including poly(pyridinium salt)s and their applications

Photobehaviour of methyl-pyridinium and quinolinium iodide derivatives, free and complexed with DNA. A case of bisintercalation.

Excited state dynamics of four azinium salts were studied in buffered water and in the presence of salmon testes DNA. Complexation with DNA changes the photobehaviour of the free ligands lowering the photoreactivity and emission in favor of internal conversion. The interaction of these four dyes with DNA was studied with different techniques with the aim to establish the affinity and the type o...

From Pyrylium to Pyridinium Salts: Understanding Physicochemical Features

It is known that physical properties of pyridinium salts can be modulated by their chemical characteristics. Owing to their broad range of applications in biology, biotechnology and chemical research, the design and synthesis of a series of 2,4,6-triarylpyridinium salts with modified structural backbone have been carried out. The main strands of work have included modifications on pyrylium cati...