17434-91-2Relevant academic research and scientific papers
Glutaconaldehyde as an Alternative Reagent to the Zincke Salt for the Transformation of Primary Amines into Pyridinium Salts
Asskar, Ghada,Rivard, Michael,Martens, Thierry
, p. 1232 - 1239 (2019/12/24)
In the presence of amines, the degradation of glutaconaldehyde in acidic medium can be prevented. By exploitation of this behavior, primary amines are transformed into their corresponding pyridinium salts, including those substrates that remain unreactive toward the Zincke salt, which is the reagent typically used to perform this transformation. The use of glutaconaldehyde also allows control of the nature of the counterion of the pyridinium with no need for additional salt metathesis reaction.
Microwaves and Aqueous Solvents Promote the Reaction of Poorly Nucleophilic Anilines with a Zincke Salt
Zeghbib, Narimane,Thelliere, Paul,Rivard, Michael,Martens, Thierry
, p. 3256 - 3262 (2016/05/19)
The Zincke reaction allows the transformation of primary amines into their respective N-alkylated or N-arylated pyridinium salts. While nucleophilic primary amines (typically, aliphatic primary amines) often lead to quantitative reactions and has been doc
An efficient ultrasonic-assisted synthesis of imidazolium and pyridinium salts based on the Zincke reaction
Zhao, Sanhu,Xu, Xiaoming,Zheng, Lu,Liu, Hai
experimental part, p. 685 - 689 (2011/02/23)
A mild and efficient method has been developed using ultrasound irradiation for the synthesis of imidazolium and pyridinium salts based on the Zincke reaction. Tertiary nitrogen nucleophiles such as pyridines and imidazoles can be alkylated with primary amine by simply using their ammonium form Zincke salts. In almost all cases, a clear yield increase results and a dramatic reduction of the reaction time accompanied by an improved quality of the products occurs.
Complex salts of TCNQ with substituted phenyl pyridines and their characterization by scanning tunneling microscopy
Magonov,Bar,Cantow,Kabbeck-Kupijai,Kossmehl
, p. 1478 - 1486 (2007/10/02)
New conductive complex salts of tetracyanoquinodimethane (TCNQ) with substituted phenylpyridines have been prepared and characterized by optical microscopy, conductivity measurements, X-ray powder diagrams and scanning tunneling microscopy (STM). The molecular stacking, which is responsible for the one-dimensional conductivity, was revealed from the diffraction data and STM images. The analysis of the STM images was based on the results obtained on a model compound, the complex salt of TCNQ and quinolinium. Although in STM the surface partial electron density is measured, several crystallographic parameters of the molecular arrangement have been determined from these images.
