138783-48-9Relevant academic research and scientific papers
Kinetic study on michael-type reactions of β-nitrostyrenes with cyclic secondary amines in acetonitrile: Transition-state structures and reaction mechanism deduced from negative enthalpy of activation and analyses of LFERs
Um, Ik-Hwan,Kang, Ji-Sun,Park, Jong-Yoon
, p. 5604 - 5610 (2013)
A kinetic study is reported for the Michael-type reactions of X-substituted β-nitrostyrenes (1a-j) with a series of cyclic secondary amines in MeCN. The plots of pseudo-first-order rate constant kobsd vs [amine] curve upward, indicating that th
MgO nanoparticles as an efficient and reusable catalyst for aza-Michael reaction
Tajbakhsh, Mahmood,Farhang, Maryam,Hosseini, Ali Asghar
, p. 665 - 672 (2014/05/20)
MgO nanoparticles were prepared by an improved sol-gel technique which appeared to have narrow size distributions. The synthesized magnesium oxide nanoparticles were used as an efficient catalyst in aza-Michael reaction for addition of amines to a series of α,β-unsaturated carbonyl compounds and nitro olefins under solvent-free conditions at room temperature to afford high yields of the β-amino carbonyl and β-nitro amines. The catalyst can be recovered and reused at least five successive runs without loss of activity. Graphical abstract: [Figure not available: see fulltext.]
Dolomite (CaMg(CO3)2) as a recyclable natural catalyst in Henry, Knoevenagel, and Michael reactions
Tamaddon, Fatemeh,Tayefi, Mohammad,Hosseini, Elaheh,Zare, Elham
, p. 36 - 42 (2013/02/22)
Iranian dolomite (CaMg(CO3)2) which consists of double-layered carbonates with Ca2+ and Mg2+ ions was utilized as a heterogeneous base catalyst in the CC, CN, and CS bond forming reactions via the Henry, Knoevenagel, aza-Michael, and thia-Michael transformations under mild conditions in water. Iranian dolomite has been characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Brunauer Emmett Teller (BET) and XRF chemical analysis, while its basic strength was evaluated by following the Hammett indicators procedure. This water-insoluble natural catalyst demonstrated high activity and was reusable.
Nucleophilic Addition to Olefins. 16. Unusual Substituent Effects in the Reaction of Amines with β-Nitrostyrenes. Solvent Effect on Intrinsic Rate Constants
Bernasconi, Claude F.,Renfrow, Richard A.,Tia, Paul R.
, p. 4541 - 4549 (2007/10/02)
A kinetic study of the addition of piperidine and morpholine to β-nitrostyrene in water and in 70percent Me2SO-30percent water at 20 deg C and of piperidine to 4-NO2-, 4-CN-, 3-Cl-, 4-Br-, 4-OMe-, and 4-NMe2-substituted β-nitrostyrenes in water at 20 deg
