21399-28-0

Basic information

• Product Name: Pyridine, 2,4,6-tris(4-bromophenyl)-
• CAS NO: 21399-28-0
• Molecular Formula: C23H14Br3N
• Molecular Weight: 544.083
• Mol File: 21399-28-0.mol

Chemical Properties

• CAS DataBase Reference: Pyridine, 2,4,6-tris(4-bromophenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: Pyridine, 2,4,6-tris(4-bromophenyl)-(21399-28-0)
• EPA Substance Registry System: Pyridine, 2,4,6-tris(4-bromophenyl)-(21399-28-0)

Safety Data

• Hazardous Substances Data: 21399-28-0(Hazardous Substances Data)

Upstream product

• 99-90-1 para-bromoacetophenone 
• 1122-91-4 4-bromo-benzaldehyde 

Downstream Products

• 2230887-26-8 2,4,6-tris(4-formylphenyl)pyridine 

Relevant articles and documents

Thiazine-2-Thiones as masked 1-Azadienes in cascade dimerization reactions

We report the unexpected formation of a 1-Azadiene dimer from 4,6-diphenyl-3,6-dihydro- 2H-1,3-Thiazine-2-Thiones under prolonged microwave irradiation. In this manner, thiazine-2-Thiones act as masked 1-Azadiene equivalents, which makes them useful synthetic tools to access complex heterocyclic frameworks. We compare this dimerization with earlier approaches and elaborate on the observed diastereoselectivity.

Alkaline-earth phosphonate MOFs with reversible hydration-dependent fluorescence

A new rigid tritopic phosphonic ligand, 2,4,6-tris(4-phosphonophenyl)pyridine (H6L), was synthesized and used to assemble isostructural barium (1) and strontium (2) phosphonate metal organic frameworks that exhibit fully reversible and selective water-dependent fluorescence red-shift at room temperature.

Strategic design of triphenylamine- and triphenyltriazine-based two-dimensional covalent organic frameworks for CO2 uptake and energy storage

Hexagonally ordered covalent organic frameworks (COFs) are interesting new crystalline porous materials that have massive potential for application in gas storage. Herein, we report the synthesis of two series of two-dimensional hexagonally ordered COFs - TPA-COFs and TPT-COFs - through one-pot polycondensations of tris(4-aminophenyl)amine (TPA-3NH2) and 2,4,6-tris(4-aminophenyl)triazine (TPT-3NH2), respectively, with triarylaldehydes featuring different degrees of planarity, symmetry, and nitrogen content. All the synthesized COFs exhibited high crystallinity, large BET surface areas (up to 1747 m2 g-1), excellent thermal stability, and pore size distributions from 1.80 to 2.55 nm. The symmetry and planarity of the monomers strongly affected the degrees of crystallinity and the BET surface areas of the resultant COFs. In addition, these COFs displayed excellent CO2 uptake efficiencies of up to 65.65 and 92.38 mg g-1 at 298 and 273 K, respectively. The incorporation of the more planar and higher-nitrogen-content triaryltriazine unit into the backbones of the TPA-COFs and TPT-COFs enhanced the interactions with CO2, leading to higher CO2 uptakes. Moreover, the synthesized COFs exhibited electrochemical properties because of their conjugated structures containing redox-active triphenylamine groups. This study exposes the importance of considering the symmetry and planarity of the monomers when designing highly crystalline COFs; indeed, the structures of COFs can be tailored to vary their functionalities for specific applications.

PHOSPHINE OXIDE COMPOUND, ORGANIC ELECTROLUMINESCENCE ELEMENT, PRODUCTION METHOD AND USES THEREOF

A compound having a stable deposition rate suitable for forming an electron-transporting layer of an organic El element. The compound is represented by the following formula (1): wherein in the formula (1), plural R1 are each an alkyl group hav