40989-90-0

Basic information

• Product Name: 6-[(pyridin-3-ylamino)methylidene]cyclohexa-2,4-dien-1-one
• CAS NO: 40989-90-0
• Molecular Formula: C₁₂H₁₀N₂O
• Molecular Weight: 198.2206
• Mol File: 40989-90-0.mol
• Article Data: 8

Chemical Properties

• Boiling Point: 376.1°C at 760 mmHg
• Flash Point: 181.3°C
• Density: 1.345g/cm³
• Vapor Pressure: 7.42E-06mmHg at 25°C
• Refractive Index: 1.758
• CAS DataBase Reference: 6-[(pyridin-3-ylamino)methylidene]cyclohexa-2,4-dien-1-one(CAS DataBase Reference)
• NIST Chemistry Reference: 6-[(pyridin-3-ylamino)methylidene]cyclohexa-2,4-dien-1-one(40989-90-0)
• EPA Substance Registry System: 6-[(pyridin-3-ylamino)methylidene]cyclohexa-2,4-dien-1-one(40989-90-0)

Safety Data

• Hazardous Substances Data: 40989-90-0(Hazardous Substances Data)

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 articles and documents

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.

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.

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.