30404-08-1Relevant articles and documents
Pyridine-functionalized MCM-41 as an efficient and recoverable catalyst for the synthesis of pyran annulated heterocyclic systems
Shaabani, Ahmad,Mohammadpour Amini, Mostafa,Ghasemi, Sabrieh,Ghadari, Rahim,Rezayan, Ali Hossein,Fazaeli, Yousef,Feizi, Shahzad
, p. 270 - 272 (2010)
Pyridine-functionalized MCM-41 catalyzed reactions between tetracyanoethylene and various activated CH-acid compounds are described. These reactions afford the corresponding pyran annulated heterocyclic ring systems in high yields at room temperature within a few minutes. The work-up procedure is very simple and the products do not require further purification. The catalyst can be recycled and reused for several times without observable loss of performance.
6,6-Dimethyl-4,8-dioxospiro[2.5]octane-1,1,2,2-tetracarbonitrile in the synthesis of heterocyclic compounds of the 2,3-dihydrofuran and 5,6,7,8-tetrahydro-4h-chromene series
Kayukova,Lukin,Kayukov,Nasakin,Khrustalev,Nesterov,Antipin
, p. 148 - 158 (1998)
6,6-Dimethyl-4,8-dioxospiro[2.5]octane-1,1,2,2-tetracarbonitrile (III), synthesized by the interaction of tetracyanoethylene with 2-bromo-5,5-dimethyl-1,3-cyclohexanedione, reacts with alcohols and ketoximes to form 2-alkoxy-2-(3-alkoxycarbonyl-2,2-dimethylpropyl)-5-amino-3-dicyanomethylene-4- cyano-2,3-dihydrofurans and 2-alkylidenaminoxy-2-(3-alkylidenaminoxycarbonyl-2,2-dimethylpropyl)-5-amino-3- dicyanomethylene-4-cyano-2,3-dihydrofurans. Compound III with triarylphosphines forms 2-(triarylphosphoranilidenamino)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H- chromene-3,4,4-tricarbonitriles. 1998 Plenum Publishing Corporation.
Isocyanide-catalyzed reaction of tetracyanoethylene and activated 1,3-dicarbonyl CH-acid compounds: A rapid and efficient synthesis of pyran annulated heterocyclic systems
Shaabani, Ahmad,Rezayan, Ali Hossein,Sarvary, Afshin,Rahmati, Abbas
, p. 274 - 281 (2008)
An isocyanide-catalyzed reaction between tetracyanoethylene and various activated CH-acid compounds to afford the corresponding pyran annulated heterocyclic ring systems, in high yield at room temperature within a few minutes, is described. To the best of our knowledge, this is the first example in which isocyanide functions as only a catalyst but not a reagent. Copyright Taylor & Francis Group, LLC.
TiO2 and TiO2 nanoparticles as efficient and recoverable catalysts for the synthesis of pyran annulated heterocyclic systems
Babakhani, Nasser,Keshipoor, Sajjad
, p. 2401 - 2406 (2013/07/26)
TiO2 catalyzed reactions between various activated CH-acids and tetracyanoethylene are described. This reaction affords the corresponding pyran annulated heterocyclic systems in high yields at room temperature in 3 h. The work-up procedure is v
Reaction of polycyanocyclopropanes with amine hydroiodides
Siaka,Kayukova,Kayukov,Lukin,Khrustalev,Nesterov,Nasakin,Antipin
, p. 1269 - 1276 (2007/10/03)
Reactions of ethyl 1,2,2,3,3-pentacyanocyclopropanecarboxylate, l,3-dioxoindan-2-spirocyclopropane-2′,2′,3′,3′- tetracarbonitrile, 2,4,6-trioxoperhydropyrimidine-5-spirocyclopropane-2′,2′,3′, 3′-tetracarbonitrile, and 4,4-dimethyl-2,6-dioxocyclohexanespirocyclopropane-2′,2′,3′, 3′-tetracarbonitrile with amine hydroiodides yield, depending on the structure of the initial cyclopropane, 1-ethoxycarbonyl-1,2,3,3-tetracyanopropenides, ethyl 3-arylamino-2,3-dicyanoacrylates, N,N-dialkyl-4-(tricyanovinyl)anilines, (4-dimethylaminophenyl)(1,3-dioxoindan-2-yl)malononitrile, (l,3-dioxoindan-2-yl)(4-tolylamino)malononitrile, 5-[aryl(dicyano)methyl]perhydropyrimidine-2,4,6-triones, and 2-amino-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4Hchromene-3,4,4-tricarbonitrile.
