81576-25-2

Basic information

• Product Name: Quinoxaline, 2,8-dimethyl-
• Synonyms: Quinoxaline, 2,8-dimethyl-
• CAS NO: 81576-25-2
• Molecular Formula: C₁₀H₁₀N₂
• Molecular Weight: 158.2
• Mol File: 81576-25-2.mol

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Quinoxaline, 2,8-dimethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Quinoxaline, 2,8-dimethyl-(81576-25-2)
• EPA Substance Registry System: Quinoxaline, 2,8-dimethyl-(81576-25-2)

Safety Data

• Hazardous Substances Data: 81576-25-2(Hazardous Substances Data)

Upstream product

• 84312-22-1 1,4-dimethyl-5-(2,6-dimethylphenyl)-2,5-diaza-1-oxapentadiene 
• 84312-21-0 3-methyl-5-(2,6-dimethylphenyl)-1-phenyl-1H-1,2,5-triazapentadiene 

Relevant articles and documents

The Thermolysis of Polyazapentadienes. Part 4. Formation of Indoles and Quinoxalines from 5-(2,6-Disubstituted phenyl)-1,2,5-triazapentadienes and Related Compounds

7-Methylindole and 5-substituted quinoxalines are the principal cyclised products from the qas-phase thermolyses of the hydrazones (2) and (5) and the oxime ester (7).Both heterocyclic systems arise by competitive decomposition of the spirodienyl radical, e.g. (18), the indole by loss of MeCN and a hydrogen atom, and the quinoxalines by loss of a methyl radical.

Effect of Blocked ortho-Positions on the Cyclisation of Aryl-1,4-diazabuta-1,3-dienyl Radicals

Indoles are the main products from the cyclisation of (2,6-dimethylphenyl)-1,4-diazabuta-1,3-dienyl radicals, together with small amounts of quinoxalines; both ring systems arise predominantly via an intermediate spirodienyl radical.