40989-90-0

Upstream product

• 462-08-8 pyridin-3-ylamine 
• 90-02-8 salicylaldehyde 
• 69-72-7 salicylic acid 

Downstream Products

• 462-08-8 pyridin-3-ylamine 
• 90-02-8 salicylaldehyde 
• 13199-80-9 N-(2-hydroxybenzyl)-3-aminopyridine 

Relevant academic research and scientific papers

Fluorescent 1:2 demultiplexer and half-subtractor based on the hydrolysis of N-salicylidene-3-aminopyridine

In moist chloroform solution, the ultraviolet light irradiation would cause N-salicylidene-3-aminopyridine (L) to hydrolyze into salicylaldehyde and 3-aminopyridine. To consider an optical signal (UV light) and a chemical signal (Zn2+) as inputs, the luminescence signals as outputs, the logic behavior of compound L was investigated. Interestingly, excited by two different wavelengths lights, two sharp distinct fluorescent spectra were collected. Consequently, a fluorescent 1:2 demultiplexer and a fluorescent half-subtractor were respectively expressed.

A study of the component formats effect on ionization constants for a number schiff pyridine water and ethanol with variant temperature degrees

This investigation This investigation was started by the synthesis of four pyridine Schiff bases from the mother compound (Salicyladehyed), whose nomenclatures and structures are seen in the text. The structures of these imines were well confirmed from U.

Relationship between crystal structures and photochromic properties of: N -salicylideneaminopyridine derivatives

N-Salicylideneaminopyridine (SAP) is a derivative of the common organic photochromic compound, N-salicylideneaniline (SA), whose crystal changes colors from orange to red upon UV irradiation. Interestingly, the photochromic property of the crystal depends on the crystal structure. In this study, SAP derivatives and their co-crystals were synthesized, and their crystal structures were analyzed to determine the relationship between their structures and photochromic properties. The photochromic property was found to be closely related to the molecular conformation and the packing efficiency in the crystal. In general, crystals with large dihedral angles were photochromic, while those with small dihedral angles were non-photochromic. However, even for crystals with large dihedral angles, small free available spaces in the crystal structure led to non-photochromic properties. This study demonstrates the importance of a combination of structural factors to elucidate the photochromic property of SAP derivatives.

Synthesis, characterization and biological study of Cu(II) complexes of aminopyridine and (aminomethyl)pyridine Schiff bases

The synthesis, characterization and antimicrobial activity determination of some aminopyridine- and (aminomethyl)pyridine–salicylaldimine copper(II) complexes were realized. The ligands, L1–L6, were prepared by condensing salicylalde

Synthesis and biological activity of some 3-aryl-3,4-dihydro-2h-benz[e]-1, 3-oxazines/6-bromo-3-aryl-3,4-dihydro-2h-benz[e]-1,3-oxazines

N-(2-Hydroxy)-benzyl-arylamine (1) gives substantially pure 3-aryl-3,4-dihydro-2H-benz[e]-1,3-oxazines/6-bromo-3-aryl-3,4-dihydro-2H-benz[e] -1,3-oxazines (2) on cyclization with formaldehyde in methanol within 0.5-1.0 h at 65-68 C in excellent yields. Th

A quick route for the synthesis of 3-Aryl-3,4-dihydro-2H-benz[e]-1,3- oxazin-2-ones

N-(2-Hydroxy)-benzyl-arylamines (1) gave substantially pure 3-aryl-3,4-dihydro-2H-benz[e]-1,3-oxazin-2-one 2 on cyclization with carbonyldiimidazole in DMSO in 20-30 min at 20-25 °C in excellent yields.

The substituent effects on the 13C chemical shifts of the azomethine carbon atom of N-(substituted phenyl)salicylaldimines

Hammett correlations between the 13C-NMR chemical shifts of the azomethine carbon atom and the corresponding substituent constants were established for thirteen Schiff bases. The successful correlation of the chemical shifts with the electrophilic substituent constants σ+ indicate a significant resonance interaction of the substituents on the aniline ring with the azomethine carbon atom in the examined series of imines. The demand for electrons in the investigated compounds was compared to that of the N-benzylideneanilines and N-(substituted phenyl)pyridinealdimines. The manner of transmission of the substituent effects is discussed and they were separated into resonance and inductive effects. The inductive effects prevail over the resonance effects.

Insights into the Origin of Solid-State Photochromism and Thermochromism of N-Salicylideneanils: The Intriguing Case of Aminopyridines

The relationships between the crystal structure and optical properties of switchable N-salicylideneanils have been revised and discussed on the basis of new experimental results and a computational approach. JV-Salicyli-dene-3- aminopyridine (L3/sup