6759-49-5

Upstream product

• 462-08-8 pyridin-3-ylamine 
• 108-95-2 phenol 
• 2569-55-3 (E)-3-phenylazopyridine 
• 95048-41-2 C₁₁H₉N₃O 

Downstream Products

• 105450-04-2 C₁₂H₁₁N₃O 

Relevant academic research and scientific papers

New symmetrical U- And wavy-shaped supramolecular H-bonded systems; geometrical and mesomorphic approaches

New mesomorphic symmetrical 2:1 supramolecular H-bonded complexes of seven phenyl rings were prepared between 4-n-alkoxyphenylazobenzoic acids and 4-(2-(pyridin-3-yl) diazenyl)phenyl nicotinate. Mesomorphic studies of the prepared complexes were investigated using differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). Fermi bands of the formed H-bonded interactions were confirmed by FT-IR spectroscopy. Geometrical parameters for all complexes were performed using the density functional theory (DFT) calculations method. Theoretical results revealed that the prepared H-bonded complexes are in non-linear geometry with U-shaped and wavy-shaped geometrical structures; however, the greater linearity of the wavy-shaped compounds could be the reason for their stability with respect to the U-shaped conformer. Moreover, the stable, wavy shape of supramolecular H-bonded complexes (SMHBCs) has been used to illustrate mesomeric behavior in terms of the molecular interaction. The experimental mesomorphic investigations revealed that all complexes possess enantiotropic smectic C phase. Phases were confirmed by miscibility with a standard smectic C (SmC) compound. A comparison was constructed to investigate the effect of incorporating azophenyl moiety into the mesomeric behavior of the corresponding five-membered complexes. It was found that the addition of the extra phenylazo group to the acid moiety has a great increment of the mesophase stability (TC) values with respect to the monotropic SmC phase of the five aromatic systems to the high stable enantiotropic SmC mesophase.

Enhanced photoinduced mass migration in supramolecular azopolymers by H-bond driven positional constraint

Here we investigated the role of hydrogen bonding in the design of supramolecular azopolymers with a highly directional and constrained azobenzene-chain interaction involving the aromatic ring of the photoactive molecule, by exploiting the 2-aminopyrimidi

Rearrangement mechanisms for azoxypyridines and azoxypyridine N-oxides in the 100% H2so4 region -The Wallach rearrangement story comes full circle

Kinetic studies of the Wallach rearrangements of four azoxypyridines, four azoxypyridine N-oxides, and one azoxypyridine JV-methiodide have been, carried out in the 100% H2SO4 acidity region. For all of the ss-isomers in the study th

Studies of azo and azoxy dyestuffs. Part 17. Synthesis and structure determination of isomeric α and β phenylazoxypyridines, N-oxides, and methiodides. A reexamination of the oxidation of phenylazopyridines and X-ray structure analyses of 4-(phenyl-α-azox

In an extension of Wallach rearrangement studies into the phenylazoxypyridine series, an investigation of 4-, 3-, and 2-phenylazoxypyridines, the N-oxides, and methiodides is reported.Oxidation of 4- and 3-phenylazopyridine with peracetic acid gives rise

Polarographic Behaviour of Some 3-Pyridylazo Dyes

The polarographic behaviour of some azo dyes containing 3-pyridyl moiety has been investigated in 40percent ethanolic buffers covering the pH range 3-12.The number of waves depends on the part of the dye attached to the 3-pyridylazo moiety.If this part is 8-quinolinol, two waves are observed, while one wave is obtained if it is a phenol or naphthol derivative.However, this one wave splits into daughters in compounds containing sulphonic acid group due to adsorption of the dye molecules and reduction of the adsorbed molecules at lower potentials.The reduction corresponds to the consumption of four electrons leading to the amine stage.The second wave in the quinoline compound is due to two-electron reduction of the quinoline moiety.A general mechanism for the reduction process is given.