65210-60-8

Basic information

• Product Name: 5H-Pyrano[4,3-b]pyridine, 7,8-dihydro-
• Synonyms: 5H-PYRANO[4,3-B]PYRIDINE,7,8-DIHYDRO
• CAS NO: 65210-60-8
• Molecular Formula: C8H9NO
• Molecular Weight: 135.166
• Mol File: 65210-60-8.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 244.1±30.0 °C(Predicted)
• Density: 1.121±0.06 g/cm3(Predicted)
• CAS DataBase Reference: 5H-Pyrano[4,3-b]pyridine, 7,8-dihydro-(CAS DataBase Reference)
• NIST Chemistry Reference: 5H-Pyrano[4,3-b]pyridine, 7,8-dihydro-(65210-60-8)
• EPA Substance Registry System: 5H-Pyrano[4,3-b]pyridine, 7,8-dihydro-(65210-60-8)

Safety Data

• Hazardous Substances Data: 65210-60-8(Hazardous Substances Data)

Upstream product

• 1904-22-9 3-[(1-phenylprop-2-yn-1-yl)oxy]propanenitrile 
• 74-86-2 acetylene 
• 6705-31-3 2-(2-hydroxyethyl)-pyrazine 
• 126473-97-0 β-(2-propynyloxy)ethylpyrazine 

Relevant articles and documents

INTRAMOLECULAR INVERSE ELECTRON DEMAND DIELS-ALDER REACTIONS OF PYRAZINES

Thermally induced intramolecular Diels-Alder cyclisations of (alkynyloxyalkyl)pyrazines to dihydropyranopyridines have been studied in the solvent undecane.The introduction of a phenyl group in the α-position of the 3-butynyloxymethyl side chain leads to a 3-4 fold increase of the reaction rate, while the influence of a γ-phenyl group on the rate is negligible.The (3-butynyloxymethyl)pyrazine reacts about 7 times slower than the (3-propynyloxyethyl)pyrazine; the presence of a trimethylsilyl group at the terminus of the alkyne decreases in general the rate of the intramolecular cyclisation.The mechanisms are discussed.