83570-43-8Relevant articles and documents
Nanoparticle-supported and magnetically recoverable nickel catalyst: A robust and economic hydrogenation and transfer hydrogenation protocol
Polshettiwar, Vivek,Baruwati, Babita,Varma, Rajender S.
experimental part, p. 127 - 131 (2010/04/22)
A magnetic nanoparticle-supported leach-proof Ni catalyst was readily prepared from inexpensive starting materials which catalyzes various hydrogenation and transfer hydrogenation reactions; high catalytic activity and ease of recovery using an external magnetic field are additional eco-friendly attributes of this catalytic system.
The Thermolysis of Polyazapentadienes. Part 2. Formation of Quinoxalines from 5-Aryl-1-phenyl-1,2,5-triazapentadienes
McNab, Hamish
, p. 1941 - 1946 (2007/10/02)
Thermolysis in the gas phase of 5-(p-substituted phenyl)-1-phenyl-1,2,5-triazapentadienes at 600 deg C and 10-2 Torr gives 6-substituted quinoxalines.The yield is ca. 30 percent, and is independent of the electronic nature of the substituent.The corresponding 5-(o-substituted) derivatives give 5-substituted quinoxalines, though the yield is lower, and quinoxaline itself is a major contaminant, due to ipso attack and ejection of the substituent. 5-(m-Substituted) derivatives give mixtures of 5- and 6-substituted quinoxalines on pyrolysis.The 5-isomer is dominant for compounds with m-alkyl substituents, while the 6-isomer is the major product for those with electron-withdrawing or electron-donating m-substituents.
