79999-01-2

Basic information

• Product Name: Pyridine, 2,4-dimethyl-3,5,6-triphenyl-
• CAS NO: 79999-01-2
• Molecular Formula: C25H21N
• Molecular Weight: 335.448
• Mol File: 79999-01-2.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: Pyridine, 2,4-dimethyl-3,5,6-triphenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Pyridine, 2,4-dimethyl-3,5,6-triphenyl-(79999-01-2)
• EPA Substance Registry System: Pyridine, 2,4-dimethyl-3,5,6-triphenyl-(79999-01-2)

Safety Data

• Hazardous Substances Data: 79999-01-2(Hazardous Substances Data)

Upstream product

• 16115-08-5 4,6-dimethyl-2-pyridone 
• 119-53-9 2-hydroxy-2-phenylacetophenone 
• 915946-47-3 3,5-dibromo-2-chloro-4,6-dimethylpyridine 
• 98-80-6 phenylboronic acid 
• 5006-58-6 2,3,5-tribromo-4,6-dimethylpyridine 
• 857429-63-1 3,5-dibromo-4,6-dimethylpyridin-2(1H)-one 
• 79999-03-4 1,2,4-triphenyl-3-methylhexane-1,5-dione 
• 79998-99-5 2-phenyl-4-methyl-4-(1-methyl-2,3-diphenyl-2-cyclopropen-1-yl)-Δ²-oxazolin-5-one 
• 79999-05-6 2-methyl-4-phenyl-4-(2,3-diphenyl-1-methyl-2-cyclopropen-1-yl)-Δ²-oxazolin-5-one 
• 79999-06-7 2-methyl-2-(2,3-diphenyl-1-methyl-2-cyclopropen-1-yl)-4-phenyl-Δ³-oxazolin-5-one 
• 103-79-7 1-phenyl-acetone 
• 38384-58-6 (E)-1-benzoyl-1-phenylprop-1-ene 
• 19980-24-6 (Z)-1-phenyl-2-(trimethylsiloxy)propene 
• 27739-61-3 2-hydroxy-1,2-diphenylbutan-1-one 

Relevant articles and documents

Efficient synthesis of differently substituted triarylpyridines with the Suzuki-Miyaura cross-coupling reaction

A library of differently substituted 3,4,5-triaryl-2,6-dimethylpyridines and 2,3,5-triaryl-4,6-dimethylpyridines were synthesized and characterized using the Suzuki-Miyaura cross-coupling reaction with accordingly selected tribromodimethylpyridines and ar

On the Mechanism of the Thermal Conversion of Cyclopropenyl-Substituted Oxazolinones to Pyridines

Thermolysis or photolysis of a sample of a 3-cyclopropenyl-substituted 2H-azirine produced 2-methyl-3,4,5,6-tetraphenylpyridine in high yield.The reaction can best be rationalized by a mechanism involving formation of a nitrile ylide intermediate followed by intramolecular dipolar cycloaddition to give an azabenzvalene, which subsequently rearranges to the pyridine.The thermal chemistry of a series of cyclopropenyl-substituted oxazolinones was also investigated.These oxazolinones undergo a thermally induced 1,3-dipolar cycloreversion reaction with elimination ofcarbon dioxide to generate a nitrile ylide intermediate adjacent to the cyclopropene ring.This dipole can be trapped when the thermolysis of the oxazolinone was carried out in the presence of a reactive dipolarophile.Heating a sample of 2-phenyl-4-methyl-4-(1-methyl-2,3-diphenyl-2-cyclopropen-1-yl)-Δ2-oxazolin-5-one at 150 deg C for 24 h afforded a mixture of 2,3-dimethyltriphenylpyridine (45percent), 2,4-dimethyltriphenylpyridine (20percent), and 2,5-dimethyltriphenylpyridine (35percent).The formation of these products is proposed to involve a stepwise cycloaddition of the initially generated nitrile ylide to produce a bicyclobutyl zwitterion which can either collapse to give an azabenzvalene or undergo rearrangement to a cyclobutenyl cation. This latter species closes to produce two different aza Dewar benzenes.Reorganization of the azabenzvalene and aza Dewar benzenes gives rise to the observed pyridines.Alternate mechanisms based on a concerted intramolecular cycloaddition reaction of the nitrile ylide do not account for the observed product ratios.