7511-94-6

Usage

Uses

Used in Materials Science:
1-(9H-fluoren-9-yl)pyridinium is used as a precursor for the synthesis of various organic molecules and polymers, contributing to the development of new materials with specific properties and applications.
Used in Organic Chemistry:
In the realm of organic chemistry, 1-(9H-fluoren-9-yl)pyridinium serves as a valuable building block for creating complex molecular structures, potentially leading to advancements in chemical research and innovation.
Used in Medicinal Chemistry:
1-(9H-fluoren-9-yl)pyridinium may have biological activities, making it a potential candidate for drug development in medicinal chemistry. Its unique structure could be harnessed to design and synthesize new therapeutic agents targeting specific diseases or conditions.
Overall, 1-(9H-fluoren-9-yl)pyridinium is a multifaceted chemical compound with a wide range of potential applications across different industries, including materials science, organic chemistry, and medicinal chemistry.

Upstream product

• 110-86-1 pyridine 
• 1940-57-4 9H-fluoren-9-yl bromide 

Downstream Products

• 71023-46-6 2-[1-(9H-Fluoren-9-yl)-1-phenyl-meth-(E)-ylidene]-2H-acenaphthylen-1-one 
• 71023-48-8 3-Fluoren-9-ylidene-1-phenyl-butan-1-one 
• 71023-54-6 3-methyl-1-phenyl-fluoranthene 
• 71023-44-4 2-[(9H-Fluoren-9-yl)-phenyl-methylene]-indan-1,3-dione 
• 110-86-1 pyridine 
• 486-25-9 9-fluorenone 
• 746-47-4 tetrabenzo[5.5]fulvalene 
• 13295-92-6 9-bromo-9,9'-bifluorene 
• 1940-57-4 9H-fluoren-9-yl bromide 
• 71023-49-9 2-[(9H-Fluoren-9-yl)-phenyl-methylene]-malononitrile 
• 71023-56-8 2,3-Dimethyl-1-phenyl-fluoranthene 
• 71023-47-7 2-(Fluoren-9-ylidene-phenyl-methyl)-malononitrile 
• 70383-91-4 fluoren-9-one-[N-(4-dimethylamino-phenyl)-oxime ] 

Relevant academic research and scientific papers

The impact of cation structure upon the acidity of triazolium salts in dimethyl sulfoxide

A series of triazolium salts, selected for their varying electronic and steric properties, were prepared and their pKa values were determined in DMSO at 25 °C using the bracketing indicator method. The effect of each systematic structural variation upon the acidity of the triazolium cation has been considered, in particular examining the effects of systematically altering electronic properties, quantified through the use of Hammett σ parameters. The first pKa value for an azolium salt that generates a mesionic carbene is also reported. These new data allow for the selection of appropriate bases for the deprotonation of such triazolium salts and the potential to correlate the pKa values determined herein with the nucleophilicity of the corresponding carbenes.

Equilibrium Acidities and Homolytic Bond Dissociation Energies of the Acidic C-H Bonds in N-Substituted Trimethylammonium and Pyridinium Cations

Equilibrium acidities (pKHAs) of the cations in sixteen N-substituted trimethylammonium salts, one N-phenacylquinuclidinium salt, eight N-substituted pyridinium salts, and N-(ethoxycarbonyl)-isoquinolinium bromide, together with the oxidation potentials of their conjugate bases, have been determined in dimethyl sulfoxide (DMSO) solution.The acidifying effects of the α-trimethylammonium groups (α-Me3N+) and the α-pyridinium groups (α-PyN+) on the adjacent acidic C-H bonds in these cations were found to average about 10 and 18 pKHA units, respectively, in DMSO.The homolytic bond dissociation energies of the acidic C-H bonds in these cations, estimated by the combination of the equilibrium acidities with the oxidation potentials of their corresponding conjugate bases (ylides), show that the α-trimethylammonium groups destabilize adjacent radicals by 2-6 kcal/mol, whereas α-pyridinium groups stabilize adjacent radicals by 3-6 kcal/mol.The effects of α-pyridinium groups on the stabilization energies of the radicals derived from these cations were found to be ca. 4-10 kcal/mol smaller than those of the corresponding phenyl groups, whereas their effects on the equilibrium acidities of the cations were 5.4-13.1 pKHA units larger.The pKHA value of tetramethylammonium cation (Me4N+) was estimated by extrapolation to be about 42 in DMSO.