1656-95-7Relevant articles and documents
Nitrogen-Rich Covalent Triazine Frameworks as High-Performance Platforms for Selective Carbon Capture and Storage
Hug, Stephan,Stegbauer, Linus,Oh, Hyunchul,Hirscher, Michael,Lotsch, Bettina V.
, p. 8001 - 8010 (2015)
The search for new efficient physisorbents for gas capture and storage is the objective of numerous ongoing researches in the realm of functional framework materials. Here we present the CO2 and H2 uptake capacities of nitrogen rich
An oxidant-free single-step synthesis of tetra-or disubstituted symmetrical pyridine derivatives by a Hf(OTf)4-catalyzed annulation
Sasada, Toshiaki,Kobayashi, Fuminori,Moriuchi, Masato,Sakai, Norio,Konakahara, Takeo
supporting information; experimental part, p. 2029 - 2034 (2011/10/09)
The Hf(OTf)4-catalyzed unprecedented annulation of an enamine with triethyl orthoformate leading to the preparation of tetrasubstituted symmetrical pyridine derivatives without an oxidant is described. This method accommodated the single-step synthesis of a disubstituted symmetrical pyridine using an acetophenone derivative, triethyl orthoformate, and ammonium acetate (NH4OAc). Georg Thieme Verlag Stuttgart New York.
Electrosynthesis of pyridines from 'only acetonitrile'
Otero, M. Dolores,Batanero, Belen,Barba, Fructuoso
, p. 8681 - 8683 (2007/10/03)
2,4,6-Trimethylpyridine-3,5-dicarbonitrile has been obtained as the main product after the electrolysis of acetonitrile in the presence of tetrabutylammonium bisulfate as supporting electrolyte using a divided cell with a medium porosity diaphragm. 2,6-Dimethylpyridine-3,5-dicarbonitrile and 2,6-dimethylpyridine-3,4,5-tricarbonitrile have also been obtained in minor quantity. This process, which takes place with participation of both electrodes, is an example of a paired electrosynthesis.
Dehydrogenations using benzofuroxan as oxidant
Patzold,Zeuner,Heyer,Niclas
, p. 281 - 288 (2007/10/02)
2-Arylsubstituted benzimidazoles, quinoxalines, in 3,5-position substituted 2,6-dimethylpyridines, and 1,4-bis(alkylamino)-9,10-anthracenediones are easily prepared under mild conditions by means of benzofuroxan as oxidant. Thus, the preparation of 2-arylbenzimidazoles succeeds in acetonitrile at 50°C in yields of 65 to 78%.
A Novel, Base-induced Fragmentation of Hantzsch-type 4-Aryl-1,4-dihydropyridines
McInally, Thomas,Tinker, Alan C.
, p. 1837 - 1844 (2007/10/02)
Hantzsch-type 1,4-dihydropyridine derivatives substituted with highly electron-deficient aryl groups in the 4-position, on treatment with a variety of basic reagents in non-hydroxylic solvents, undergo an unexpected and ready scission of the inter-ring bond to give the corresponding 4-unsubstituted pyridine and an arene derived from the original 4-substituent.The scope of the reaction has been investigated and possible mechanisms are discussed.
Kinetic Investigation on the Hydrogen Transfer from Dihydropyridines to Hydrazyls
Abou-Elenien, G.,Rieser, J.,Ismail, N.,Wallenfels, K.
, p. 391 - 394 (2007/10/02)
The results of a kinetic study on the hydrogen transfer between different dihydropyridines and mono-, bis- and trishydrazyls of the tricyanobenzene series are described.The reactions have been found to obey in all cases a second-order law.The influences of solvent medium, redox-potentials of the reactants and temperature on the rates of reactions have been investigated. - Keywords: Dihydropyridines, Hydrazyls, Hydrogen Transfer, Kinetics
Electrochemical Properties of Pyridine and Dihydropyridine Derivatives
Abou-Elenien, G.,Rieser, J.,Ismail, N.,Wallenfels, K.
, p. 386 - 390 (2007/10/02)
The electrochemical oxidation and reduction properties of different dihydropyridines and pyridines have been investigated in non aqueous solvent as benzonitrile and acetonitrile with tetra-n-butylammonium perchlorate as supporting electrolyte at platinium electrodes using DC-voltametry, cycl. voltametry and coulometry.Possible redox-mechanisms are discussed. - Keywords: Pyridines, Dihydropyridines, Electrochemical behavior, Redox-Potentials